Healthcare Data Breach Lookup
Received a data breach notification letter? Search for the organization below to confirm the breach was officially reported, see what data was exposed, and find out what to do next. Covers hospitals, clinics, pharmacies, health insurers, and their vendors.
1432
Total Breaches
86
2026 Breaches
26.1M
Total Records
4.3M
2026 Records
Type:
| Organization | Records | Vector | Disclosed |
|---|---|---|---|
| San Bernardino County on behalf of Arrowhead Regional Medical Center | — | unknown | Aug 28, 26 |
| Elixir Medical Corporation | — | hacking | Jul 20, 26 |
| North Coast Opportunities, Inc. / Redwood Caregiver Resource Center | — | unknown | Jun 30, 26 |
| Terry J. Dubrow, MD, A Medical Corporation | — | hacking | Jun 21, 26 |
| Central Maine Area Agency on Aging DBA Spectrum Generations DBA Maine Pine Catering | — | unknown | Jun 11, 26 |
| Maine Health Behavioral Health | — | unknown | Jun 11, 26 |
| Ridgeway Pharmacy Ltd | — | third party | Jun 7, 26 |
| AdaptHealth, LLC | — | phishing | Jun 5, 26 |
| iRhythm Technologies Inc. | — | unknown | Jun 3, 26 |
| Sandhills Medical Foundation, Inc. UPDATED | — | unknown | Jun 3, 26 |
| Clarinda Regional Health Center | — | unknown | Jun 3, 26 |
| Waveny Lifecare Network | — | unknown | Jun 2, 26 |
| Quantum Health, Inc. | — | phishing | May 29, 26 |
| Ohio ENT & Allergy Physicians | — | unknown | May 29, 26 |
| Regional Center of Orange County | — | third party | May 27, 26 |
| Wentworth Douglass-Hospital | — | unknown | May 26, 26 |
| PRN Healthcare | — | unknown | May 25, 26 |
| Maine Dentistry | — | unknown | May 20, 26 |
| United Medical Systems (DE), Inc. | — | unknown | May 20, 26 |
| Southern California University of Health Sciences | — | unknown | May 19, 26 |
| Perrigo Company | — | unknown | May 18, 26 |
| DentaQuest LLC | — | unknown | May 17, 26 |
| Dental Studies Institute | — | unknown | May 13, 26 |
| American Addiction Centers | — | third party | May 12, 26 |
| Glucobit Inc. | — | hacking | May 1, 26 |
| Florida Physician Specialists | — | unknown | Apr 25, 26 |
| Columbia Medical Practice | — | unknown | Apr 24, 26 |
| Pacient | — | unknown | Apr 24, 26 |
| Sagent Pharmaceuticals | — | unknown | Apr 23, 26 |
| Laurel Eye Clinic | — | unknown | Apr 22, 26 |
| Church Home of Hartford, Incorporated, d/b/a Seabury | — | unknown | Apr 22, 26 |
| TriWest Healthcare Alliance | — | hacking | Apr 17, 26 |
| AgelessRx | — | — | Apr 17, 26 |
| Kern Psychiatric Health and Wellness Center, Inc | — | unknown | Apr 16, 26 |
| Community Psychiatry Management, LLC d/b/a Mindpath Health | 14,060 | unknown | Apr 14, 26 |
| Cookeville Regional Medical Center | 337,917 | ransomware | Apr 14, 26 |
| Aroostook Mental Health Center | — | hacking | Apr 11, 26 |
| Clinical Registry Solutions | — | hacking | Apr 9, 26 |
| Sanger Skilled Care, LLC dba Cornerstone Care Center | — | unknown | Apr 7, 26 |
| Woodfords Family Services - Amended Notice Submission | 41,984 | ransomware | Apr 7, 26 |
| Heart South Cardiovascular Group | 46,666 | unknown | Apr 6, 26 |
| Nacogdoches Memorial Hospital | 257,073 | hacking | Mar 31, 26 |
| Windels Marx Lane & Mittendorf, LLP | — | hacking | Mar 30, 26 |
| Ultrahuman Healthcare Private Limited | — | hacking | Mar 27, 26 |
| TriMed, Inc. | — | hacking | Mar 27, 26 |
| Empowerment Schools - Healthcare Ltd and Texas Medical Careers, Limited | — | hacking | Mar 26, 26 |
| UFCW Local 342 and its affiliated funds, Amalgamated Meat Cutters and Retail Food Store Employees Union Local 342 Health Care Fund; and Amalgamated Meat Cutters & Retail Food Employees Union Local 342 Welfare Fund | 56,615 | unknown | Mar 20, 26 |
| Virta Health Corp. and Virta Medical, PC | — | unknown | Mar 19, 26 |
| Navia Benefit Solutions, Inc. | 2,697,540 | unknown | Mar 18, 26 |
| MedPeds Associates of Sarasota | 21,430 | ransomware | Mar 16, 26 |
| Community Nurse | 6,746 | third party | Mar 12, 26 |
| Health Dimensions Group | 450 | unknown | Mar 11, 26 |
| CareCloud, Inc. | — | hacking | Mar 10, 26 |
| Ansell Healthcare Products LLC USA | 2,061 | unknown | Mar 10, 26 |
| Bell Ambulance, Inc. | 237,830 | hacking | Mar 9, 26 |
| Harbor Developmental Disabilities Foundation (d/b/a Harbor Regional Center) | — | unknown | Mar 6, 26 |
| BAYADA Home Health Care, Inc. | — | hacking | Mar 2, 26 |
| City Health, a medical corporation | — | hacking | Mar 2, 26 |
| Networking Technology, Inc. | — | unknown | Mar 1, 26 |
| Evoke Wellness at Hilliard | 261 | unknown | Feb 27, 26 |
| Jackson Hospital and Clinic | 14,485 | third party | Feb 27, 26 |
| Saint Mary’s Home of Erie | — | unknown | Feb 20, 26 |
| Greater Pittsburgh Orthopedic Associates | 56,954 | hacking | Feb 20, 26 |
| Pediatric Products, LLC | — | hacking | Feb 17, 26 |
| North Star Fertility Partners LLC | 1 | third party | Feb 13, 26 |
| WIRX Pharmacy | 20,104 | hacking | Feb 12, 26 |
| Tecan Technology Development Boston, Inc. (formerly known as Emphysys, Inc.) | 2 | hacking | Feb 12, 26 |
| Academic Urology & Urogynecology of Arizona | 73,281 | hacking | Feb 12, 26 |
| Volvo Group North America, LLC | 16,991 | third party | Feb 9, 26 |
| Counseling Center of Wayne and Holmes Counties | 83,354 | unknown | Feb 9, 26 |
| WorldOne Inc. dba Sermo | 2,674 | ransomware | Feb 9, 26 |
| Option Care Health, Inc. | — | credential stuffing | Feb 6, 26 |
| Cottage Hospital | 2,156 | hacking | Feb 6, 26 |
| Hims & Hers, Inc. | — | third party | Feb 4, 26 |
| Alta Orthopaedics Medical Group, Inc. | — | unknown | Feb 3, 26 |
| Progress Foundation | — | phishing | Feb 2, 26 |
| Alpine Ear, Nose, and Throat | 65,648 | unauthorized access | Jan 30, 26 |
| Nova Biomedical Corp. | 10,764 | hacking | Jan 27, 26 |
| Native American Health Center | — | third party | Jan 25, 26 |
| zHealth, Inc. | — | unknown | Jan 20, 26 |
| Xsolis, Inc. | — | phishing | Jan 20, 26 |
| Modoc Medical Center | — | unknown | Jan 19, 26 |
| Central Maine healthcare | 145,000 | internal system_breach | Jan 15, 26 |
| Avosina Healthcare Solutioins | 42,261 | hacking | Jan 12, 26 |
| CardioFit Medical Group, Inc. | — | misconfiguration | Jan 8, 26 |
| OpenLoop Health, Inc. | — | hacking | Jan 7, 26 |
| Andover Eye Associates | 1,638 | unknown | Dec 31, 25 |
| Oakland Smile Dental | — | misconfiguration | Dec 27, 25 |
| QualDerm Partners, LLC | — | unknown | Dec 23, 25 |
| CallonDoc, Inc. | — | hacking | Dec 22, 25 |
| Brevard Skin and Cancer Center | 55,500 | hacking | Dec 19, 25 |
| Marana Health Center | — | unknown | Dec 18, 25 |
| Kaniksu Community Health | — | third party | Dec 18, 25 |
| McIntosh Laboratory, Inc. | — | hacking | Dec 17, 25 |
| Stockton Cardiology Medical Group | — | unknown | Dec 15, 25 |
| ZenPatient, Inc. | — | hacking | Dec 5, 25 |
| Couve Healthcare Consulting, LLC DBA Evergreen Healthcare Group | — | unknown | Dec 3, 25 |
| Catalyst Physician Group | — | hacking | Dec 2, 25 |
| Nebraska Orthopaedic Center, P.C. | — | unknown | Dec 2, 25 |
| Northern Inyo Healthcare District d/b/a Northern Inyo Hospital | — | unknown | Dec 2, 25 |
| Livara Health Medical Group - dba SpineZone | — | unknown | Dec 2, 25 |
| Together Women's Health LLC - Aesto | — | unknown | Dec 2, 25 |
| Murfreesboro Medical Clinic | — | unknown | Dec 2, 25 |
| Everside Health | — | hacking | Dec 2, 25 |
| Stanislaus County Health Services Agency | — | hacking | Dec 2, 25 |
| Silver Summit Medical Corporation | — | third party | Nov 27, 25 |
| Horizon Healthcare RCM | — | — | Nov 26, 25 |
| Marin Cancer Care | — | hacking | Nov 22, 25 |
| MACT Health Board Inc. | — | third party | Nov 12, 25 |
| Vikor Scientific, LLC | 88 | insider | Nov 8, 25 |
| Devereux Foundation | — | hacking | Nov 6, 25 |
| Boston Healthcare for the Homeless Program | — | unknown | Oct 31, 25 |
| Health & Palliative Services of the Treasure Coast, Inc d/b/a Treasure Coast Hospice | — | — | Oct 24, 25 |
| MedImpact Healthcare Systems, Inc. | — | unknown | Oct 18, 25 |
| Leggett & Platt, Incorporated Employee Benefits Plan | — | unknown | Oct 18, 25 |
| Medical Associates of Brevard, LLC PO Box 361095 City: Melbourne | — | — | Oct 10, 25 |
| Coos County Family Health Services | — | — | Oct 9, 25 |
| Paradigm Healthcare Services | — | hacking | Oct 8, 25 |
| Unlimited Technology Systems, LLC | — | unknown | Oct 5, 25 |
| Fort Wayne Medical Education Program | — | — | Oct 3, 25 |
| Gaylord Specialty Healthcare | — | — | Sep 24, 25 |
| Albany Gastroenterology Consultants | — | — | Sep 23, 25 |
| MCBS, LLC | — | hacking | Sep 22, 25 |
| VITAS Hospice Services, LLC | — | third party | Sep 21, 25 |
| New Hampshire Hospital Association | — | — | Sep 19, 25 |
| Insightin Health, Inc. | — | vulnerability | Sep 17, 25 |
| Goshen Medical Center | — | — | Sep 17, 25 |
| OB-GYN Associates | — | third party | Sep 16, 25 |
| Community Health Network | — | — | Sep 14, 25 |
| Valley Radiology Consultants Medical Group | — | hacking | Sep 12, 25 |
| Franklin Dermatology Group, PLC | — | — | Sep 11, 25 |
| Wayne Memorial Hospital | — | — | Sep 7, 25 |
| Medical Associates of Brevard, LLC | — | — | Sep 5, 25 |
| Keys Pathology Associates, PA | — | — | Sep 2, 25 |
| Excelsior Orthopaedics, LLP | — | — | Aug 29, 25 |
| Black Hills Regional Eye Institute | — | — | Aug 28, 25 |
| Conifer Value-Based Care, LLC | — | third party | Aug 28, 25 |
| Gl Veneer, Inc. | — | third party | Aug 26, 25 |
| Anchorage Neighborhood Health Center | — | third party | Aug 24, 25 |
| Aspire Rural Health System | — | — | Aug 21, 25 |
| Fusion Medical Staffing | — | — | Aug 20, 25 |
| Phreesia, Inc. | 100,000 | third party | Aug 17, 25 |
| CPAP Medical Supplies and Services Inc. | — | — | Aug 15, 25 |
| Expert MRI | — | hacking | Aug 14, 25 |
| Parexel International, LLC | — | vulnerability | Aug 9, 25 |
| Diversified Benefit Services Insurance Marketing, Inc. | — | phishing | Aug 7, 25 |
| Inotiv, Inc. | 9,542 | ransomware | Aug 5, 25 |
| Highlands Oncology Group PA | — | — | Aug 1, 25 |
| Tieu Dental Corporation | — | hacking | Jul 28, 25 |
| Hello Cake, Inc. | — | misconfiguration | Jul 25, 25 |
| McKenzie Memorial Hospital | — | — | Jul 24, 25 |
| Manning, Fulton and Skinner, P.C. on behalf on Durham County Hospital Corporation | — | — | Jul 21, 25 |
| Western Montana Mental Health Center | — | — | Jul 18, 25 |
| Valley Mountain Regional Center | — | misconfiguration | Jul 14, 25 |
| Superior Vision Services, Inc. | — | phishing | Jul 9, 25 |
| Allied Health | — | unknown | Jul 7, 25 |
| Rockrose Development L.L.C. | — | third party | Jul 4, 25 |
| Outcomes One, Inc. | — | phishing | Jul 1, 25 |
| Esse Health | — | — | Jun 30, 25 |
| Open Practice Solutions, LTD | — | misconfiguration | Jun 26, 25 |
| Curium Pharma | — | — | Jun 24, 25 |
| Mainline Health Systems Inc | — | — | Jun 23, 25 |
| McLaren Health Care | — | — | Jun 20, 25 |
| Healthcare Interactive, Inc. | — | unknown | Jun 17, 25 |
| CareTracker, Inc. d/b/a Amazing Charts | — | third party | Jun 15, 25 |
| Central Kentucky Radiology | — | — | Jun 13, 25 |
| Asheville Eye Associates, PLLC | — | — | Jun 13, 25 |
| South Coast Pediatrics | — | unknown | Jun 12, 25 |
| Bradford Health Services LLC | — | — | May 30, 25 |
| Mental Health Association | — | — | May 30, 25 |
| Next Step Healthcare LLC | — | — | May 30, 25 |
| Altos,Inc | — | third party | May 30, 25 |
| Madera Community Hospital | — | hacking | May 28, 25 |
| La Perouse LLC | — | third party | May 27, 25 |
| The Health Trust and its subsidiary, FASS | — | hacking | May 26, 25 |
| The Cooper Health System | — | — | May 23, 25 |
| Nephrology Associates Medical Group | — | unknown | May 19, 25 |
| Community Counseling of Bristol County | — | — | May 19, 25 |
| Covenant Health, Inc. | — | third party | May 18, 25 |
| Harbin Clinic, LLC (incident experienced by reporting entity’s vendor, Nationwide Recovery Services, Inc. and did not impact reporting entity’s systems) | — | — | May 16, 25 |
| Hunter Health Clinic | — | — | May 15, 25 |
| Health Care For All | — | — | May 9, 25 |
| welcome dentistry | — | — | May 7, 25 |
| Massachusetts Association for Mental Health | — | — | Apr 22, 25 |
| Ahtna, Inc. | — | third party | Apr 20, 25 |
| Behavioral Health Resources | — | — | Apr 17, 25 |
| Hamilton Health Care System, Inc. d/b/a Vitruvian Health | — | — | Apr 15, 25 |
| DaVita Inc. | — | misconfiguration | Apr 15, 25 |
| Arbor Associates, Inc. | — | unknown | Apr 15, 25 |
| Central Texas Pediatric Orthopedics | — | — | Apr 14, 25 |
| Medical Express Ambulance Service | — | — | Apr 14, 25 |
| Vitenas Cosmetic Surgery, PA | — | — | Apr 11, 25 |
| Omni Healthcare Financial Holdings | — | — | Apr 9, 25 |
| Planned Parenthood Northern California | — | third party | Apr 7, 25 |
| Gilead Sciences, Inc. | — | — | Apr 2, 25 |
| Community Dental Care, Inc. | — | — | Apr 1, 25 |
| Marc Everett MD, PC | — | — | Apr 1, 25 |
| Ocuco | — | vulnerability | Mar 28, 25 |
| Blue Shield of California | — | unknown | Mar 25, 25 |
| Delta Dental of Virginia | — | phishing | Mar 21, 25 |
| Coalesce, LLC dba Benefitelect | — | unknown | Mar 20, 25 |
| Northwest Medical Homes, LLC | — | hacking | Mar 19, 25 |
| Dove Healthcare | — | — | Mar 18, 25 |
| Northern California Children's Therapy Center | — | vulnerability | Mar 16, 25 |
| Vibra Hospital of Sacramento, LLC | — | unknown | Mar 12, 25 |
| American Association of Critical-Care Nurses | — | third party | Mar 8, 25 |
| Schewitz Psychological Services Inc (DBA: Couples Learn) | — | phishing | Mar 7, 25 |
| CareNexa, LLC, dba Molecular Testing Labs (“MTL”) | — | third party | Mar 7, 25 |
| Gastroenterology Associates of Central Florida, P.A. dba Center for Digestive Health | — | — | Mar 6, 25 |
| Palo Verde Hospital | — | unknown | Mar 3, 25 |
| Renkim Corporation | — | third party | Mar 2, 25 |
| Wakefield & Associates, LLC | — | third party | Mar 2, 25 |
| Central Valley Regional Center, Inc. | — | third party | Mar 1, 25 |
| 180 Medical | — | — | Feb 28, 25 |
| Aya Healthcare, Inc. | — | — | Feb 27, 25 |
| Tiger Aesthetics Medical, LLC | — | — | Feb 26, 25 |
| Absolute Dental Group, LLC | — | unknown | Feb 19, 25 |
| Endue Software | 1,000,000 | unknown | Feb 16, 25 |
| ERMI LLC | — | hacking | Feb 15, 25 |
| DermCare Management | — | unknown | Feb 14, 25 |
| Anne Arundel Dermatology | — | third party | Feb 14, 25 |
| Kittrich Corporation | — | third party | Feb 12, 25 |
| Ciox Health LLC, d/b/a Datavant Group | — | — | Feb 11, 25 |
| Santa Rosa Community Health Centers | — | — | Feb 9, 25 |
| Memorial Hospital and Manor | — | — | Feb 8, 25 |
| Beverly Hills Oncology Medical Group | — | unknown | Feb 7, 25 |
| Hospital Sisters Health System ("HSHS") | — | — | Feb 6, 25 |
| Vantage Financial Group, Toledo | — | — | Feb 5, 25 |
| Pacific Imaging Management, LLC dba Radiology Associates of San Luis Obispo | — | third party | Feb 3, 25 |
| Moses-Weitzman Health System, Inc. | — | — | Jan 30, 25 |
| American Consumer Credit Counseling, Inc. (“ACCC”) | — | unknown | Jan 29, 25 |
| James J. Lynch, MD Ltd. Dba Swift Institute | — | vulnerability | Jan 28, 25 |
| Sharp HealthCare | — | third party | Jan 27, 25 |
| Sharp Community Medical Group (SCMG) | — | unknown | Jan 27, 25 |
| Episource, LLC | — | unknown | Jan 27, 25 |
| Brown & Toland Physicians | — | unknown | Jan 27, 25 |
| Genex Services, LLC | — | phishing | Jan 22, 25 |
| Cerner Corporation | — | third party | Jan 22, 25 |
| SimonMed Imaging | — | third party | Jan 21, 25 |
| Sonrisas Dental Health | — | third party | Jan 20, 25 |
| New York Blood Center Enterprises | — | unknown | Jan 20, 25 |
| Mission City Community Network, Inc. | — | unknown | Jan 20, 25 |
| Northwest Radiologists and Mt. Baker Imaging | — | vulnerability | Jan 20, 25 |
| United Faith Ministries | — | third party | Jan 15, 25 |
| Gardner Health Services | — | — | Jan 11, 25 |
| Biagi Bros, Inc. | — | vulnerability | Dec 31, 24 |
| Massachusetts Medical Society (“MMS”) | — | — | Dec 26, 24 |
| Trusteed Plans Service Corporation | — | unknown | Dec 26, 24 |
| Premier Healthcare Holdings inc. | — | — | Dec 20, 24 |
| Los Angeles County Developmental Services dba Lanterman Regional Center | — | unknown | Dec 20, 24 |
| Richmond University Medical Center | — | — | Dec 19, 24 |
| Hebrew Home for Aged Disabled d/b/a San Francisco Campus for Jewish Living | — | unknown | Dec 19, 24 |
| OrthopedicsNY, LLP | — | — | Dec 17, 24 |
| SCLARC | — | unknown | Dec 14, 24 |
| California Cancer Associates for Research and Excellence - San Diego | — | phishing | Dec 13, 24 |
| Golden State Radiation Oncology | — | phishing | Dec 13, 24 |
| Memorial Radiation Oncology Medical Group | — | phishing | Dec 13, 24 |
| Mojave Radiation Oncology Medical Group | — | phishing | Dec 13, 24 |
| Orange County Radiation Oncology Medical Group | — | phishing | Dec 13, 24 |
| Radiation Oncology Network of Southern California, LLC | — | phishing | Dec 13, 24 |
| Synergy Radiation Oncology Medical Group | — | phishing | Dec 13, 24 |
| Cierant Corporation | — | third party | Dec 9, 24 |
| Anna Jaques Hospital | — | — | Dec 5, 24 |
| MedRevenu, LLC | — | third party | Dec 3, 24 |
| Cardiology Associates of Mobile, Inc. | — | — | Dec 3, 24 |
| Bridges Experience, Inc. | — | unknown | Dec 2, 24 |
| Connecticut GI, PLLC and Gastroenterology Associates of Fairfield, P.C. | — | — | Nov 26, 24 |
| Barrett-Jackson Holdings, LLC | — | unknown | Nov 25, 24 |
| Watsonville Community Hospital | — | unknown | Nov 25, 24 |
| Superior Air-Ground Ambulance Service, Inc. | — | — | Nov 22, 24 |
| Monro, Inc. | — | unknown | Nov 21, 24 |
| Nevro Corp. | — | unknown | Nov 21, 24 |
| North Los Angeles County Regional Center | — | ransomware | Nov 20, 24 |
| Artivion, Inc. | — | third party | Nov 20, 24 |
| TriZetto Provider Solutions | — | unknown | Nov 19, 24 |
| Harmac Medical Products Inc. | — | — | Nov 15, 24 |
| PIH Health, Inc. | — | unknown | Nov 14, 24 |
| La Clinica de La Raza, Inc. | — | — | Nov 4, 24 |
| Friends of Family Health Center | — | vulnerability | Nov 1, 24 |
| Share Ourselves | — | unknown | Nov 1, 24 |
| CE-Edinger Medical Group BA - TriZetto TPS | — | — | Nov 1, 24 |
| Mission Neighborhood Health Center | — | third party | Nov 1, 24 |
| Open Door Community Health Centers | — | third party | Nov 1, 24 |
| One Community Health | — | third party | Nov 1, 24 |
| Harmony Health Medical Clinic and Family Resource Center | — | third party | Nov 1, 24 |
| Asian and Pacific Islander Wellness Center, Inc. dba San Francisco Community Health Center | — | third party | Nov 1, 24 |
| County of Santa Barbara Health Department | — | third party | Nov 1, 24 |
| LifeLong Medical Care | — | vulnerability | Nov 1, 24 |
| Asian Americans for Community Involvement | — | third party | Nov 1, 24 |
| Axis Community Health | — | third party | Nov 1, 24 |
| OLE Health (DBA CommuniCare + OLE) | — | third party | Nov 1, 24 |
| Santa Cruz Community Health | — | vulnerability | Nov 1, 24 |
| Bay Area Community Health | — | third party | Nov 1, 24 |
| SysInformation Healthcare Services, Inc. | — | — | Oct 29, 24 |
| Jaime Schwartz MD, PC | — | third party | Oct 29, 24 |
| Quest Diagnostics, Incorporated | — | — | Oct 25, 24 |
| Acadia Pharmaceuticals Inc. | — | misconfiguration | Oct 24, 24 |
| Benefits Management Group, Inc. | — | unknown | Oct 24, 24 |
| Washington Gastroenterology | — | third party | Oct 23, 24 |
| Community Dental | — | — | Oct 22, 24 |
| Pacific Pulmonary Medical Group | — | third party | Oct 21, 24 |
| Clay Platte Family Medicine, Summit Family and Sports Medicine Clinic, Cobblestone Family Medicine Clinic, and Barry Pointe Family Medicine Clinic (“the Clinics”) | — | — | Oct 18, 24 |
| 90 Degree Benefits, Inc. – MN/WI Office | — | phishing | Oct 18, 24 |
| Han Van Duong, M.D. | — | unknown | Oct 17, 24 |
| Goglia Nutrition LLC | — | unknown | Oct 16, 24 |
| Boutin Jones | — | unknown | Oct 15, 24 |
| Community Health Center, Inc. | — | unknown | Oct 14, 24 |
| American Associated Pharmacies | — | ransomware | Oct 13, 24 |
| Laboratory Services Cooperative | — | third party | Oct 8, 24 |
| Newport Harbor Pathology Medical Group, Inc. d/b/a Orange County Medical Group Pathology d/b/a Mission Laguna Pathology Medical Group d/b/a Barr Dermatopathology | — | unknown | Oct 8, 24 |
| Medical Center Barbour | — | — | Oct 1, 24 |
| Petaluma Health Center | — | third party | Oct 1, 24 |
| Apellis Pharmaceuticals, Inc. | — | — | Sep 30, 24 |
| Healthcare Services Group, Inc. | — | unknown | Sep 27, 24 |
| American Association of Colleges of Osteopathic Medicine | — | insider | Sep 26, 24 |
| CF Medical is providing this notification. However the incident was limited to CF Medical’s former vendor’s, Financial Business and Consumer Solutions, Inc.’s (“FBCS”) systems and at no point impacted CF Medical’s systems, network or technology. | — | — | Sep 26, 24 |
| BayMark Health Services, Inc. | — | unknown | Sep 24, 24 |
| American Addiction Centers, Inc. | — | unknown | Sep 23, 24 |
| Texas Tech University Health Sciences Center | — | unknown | Sep 17, 24 |
| Texas Tech University Health Science Center El Paso | — | unknown | Sep 17, 24 |
| SAG-AFTRA Health Plan | — | phishing | Sep 17, 24 |
| Dignity Health Lassen Medical Clinic | — | third party | Sep 17, 24 |
| Electronics For Imaging, Inc. | — | vulnerability | Sep 17, 24 |
| Regional Care, Inc. | — | unknown | Sep 13, 24 |
| Access Sports Medicine & Orthopedics ("Access Sports") | — | — | Sep 12, 24 |
| VectraRx LLC | — | unknown | Sep 12, 24 |
| Greater Cincinnati Behavioral Health Services | — | — | Sep 11, 24 |
| Next Level Finance Partners, LLC d/b/a Century Support Services | — | unknown | Sep 10, 24 |
| Carespring Health Care Management LLC | — | — | Sep 9, 24 |
| Orthopedics Rhode Island, Inc. | — | unknown | Sep 4, 24 |
| Weiser Memorial Hospital | — | unknown | Sep 4, 24 |
| MiCare Health Center | — | unknown | Sep 3, 24 |
| Sunflower Medical Group, P.A. | — | third party | Sep 2, 24 |
| Birch Medical LLC | — | vulnerability | Sep 1, 24 |
| Solairus Aviation, LLC | — | third party | Aug 31, 24 |
| Albany College of Pharmacy and Health Sciences | — | unknown | Aug 31, 24 |
| Providence | — | third party | Aug 30, 24 |
| PG Dental d/b/a Aire Dental Arts | — | — | Aug 28, 24 |
| Piedmont Cancer Institute | — | — | Aug 19, 24 |
| College Hospital Costa Mesa | — | unknown | Aug 14, 24 |
| Wilmington Community Clinic | — | unknown | Aug 13, 24 |
| Merakris Therapeutics, Inc. | — | — | Aug 12, 24 |
| Omni Family Health | — | unknown | Aug 7, 24 |
| AltaMed Health Services Corporation | — | phishing | Aug 5, 24 |
| Hamel Cranial Chiropractic & Wellness INC. | — | unknown | Aug 4, 24 |
| OnePoint Patient Care | — | third party | Aug 3, 24 |
| Kaiser Foundation Hospitals | — | phishing | Aug 2, 24 |
| Eye Care of Maine, PA | — | — | Aug 1, 24 |
| Accountable Healthcare Staffing | — | — | Jul 31, 24 |
| Baim Institute for Clinical Research | — | — | Jul 31, 24 |
| Bayhealth Medical Center | — | unknown | Jul 27, 24 |
| Blain Jacobson DMD, CAGS | — | third party | Jul 24, 24 |
| Oxford County Mental Health Services | — | — | Jul 19, 24 |
| Therapeutic Health Services (THS) | — | — | Jul 19, 24 |
| Freudenberg Medical, LLC | — | — | Jul 16, 24 |
| The Phia Group, LLC | — | unknown | Jul 8, 24 |
| DAP Health | — | third party | Jul 8, 24 |
| Gryphon Healthcare, LLC | — | third party | Jul 6, 24 |
| Select Medical Holdings Corporation | — | third party | Jul 5, 24 |
| Florida Community Health Centers | — | — | Jul 1, 24 |
| Hillcrest Convalescent Center, Inc. | — | unknown | Jun 27, 24 |
| Humboldt Independent Practice Association | — | phishing | Jun 27, 24 |
| Counseling Associates of New London, PLLC | — | — | Jun 27, 24 |
| The Mount Kisco Surgery Center LLC d/b/a The Ambulatory Surgery Center of Westchester | — | — | Jun 26, 24 |
| Soliant Health, LLC | — | phishing | Jun 23, 24 |
| Altoona Logan Township Mobile Medical Emergency Department Authority | — | — | Jun 21, 24 |
| Acadian Ambulance Service, Inc. | — | unknown | Jun 19, 24 |
| Consulting Radiologists LTD. | — | — | Jun 14, 24 |
| Arrowhead Evaluation Services, Inc. | — | unknown | Jun 14, 24 |
| South Texas Oncology and Hematology, PLLC | — | — | Jun 13, 24 |
| Highland Health Systems | — | — | Jun 13, 24 |
| Welcome Health | — | credential stuffing | Jun 11, 24 |
| Rite Aid Corporation | — | third party | Jun 6, 24 |
| Family Health Center | — | — | Jun 5, 24 |
| Angels Neurological Centers, P.C. | — | — | Jun 5, 24 |
| Illinois Bone & Joint Institute, LLC (“IBJI”) | — | third party | May 30, 24 |
| Delta County Memorial Hospital District | — | third party | May 27, 24 |
| LOS ANGELES COUNTY DEPARTMENT OF MENTAL HEALTH | — | phishing | May 27, 24 |
| Newton Centre Dental | — | — | May 24, 24 |
| The University of Chicago Medical Center | — | — | May 24, 24 |
| A&A Services d/b/a Sav-Rx | — | — | May 24, 24 |
| Affiliated Dermatologists & Dermatologic Surgeons P.A. | — | — | May 23, 24 |
| Best Health Physical Therapy LLC | — | — | May 23, 24 |
| Victoria Eye Center/Victoria Surgery Center/Victoria Vision Center | — | — | May 21, 24 |
| Henry Schein, Inc. | — | third party | May 13, 24 |
| Baxter International, Inc. | — | third party | May 10, 24 |
| Aizer Health; F/K/A Ezras Choilim Health Center, Inc. | — | — | May 8, 24 |
| Worldwide Clinical Trials Holdings, Inc. | — | — | May 8, 24 |
| Arch Health Partners, Inc. d/b/a Palomar Health Medical Group | — | unknown | May 5, 24 |
| Community Clinic of Maui, Inc. dba Malama I Ke Ola Health Center | — | unknown | May 4, 24 |
| Turning Point of Central California, Inc. | — | unknown | Apr 30, 24 |
| Summit Pathology, a Colorado general partnership and Summit Pathology Laboratories, Inc. a Colorado corporation | — | unknown | Apr 26, 24 |
| Moffitt Cancer Center and Research Institute | — | — | Apr 24, 24 |
| E-Benefit Solution | — | third party | Apr 22, 24 |
| United of Omaha Life Insurance Company | — | phishing | Apr 21, 24 |
| Ambulnz Holdings, LLC | — | unknown | Apr 21, 24 |
| California Cryobank LLC | — | misconfiguration | Apr 20, 24 |
| Blackstone Valley Community Health Center | — | — | Apr 19, 24 |
| Octapharma Plasma, Inc. | — | third party | Apr 17, 24 |
| Allcare medical Management, Inc. | — | unknown | Apr 16, 24 |
| Young Consulting LLC | — | unknown | Apr 10, 24 |
| Compex Legal Services Inc. | — | unknown | Apr 9, 24 |
| Radiology Associates of Richmond, Inc. | — | unknown | Apr 2, 24 |
| Northern Virginia Oral, Maxillofacial & Implant Surgery | — | — | Mar 28, 24 |
| Wyndemere Senior Care LLC | — | — | Mar 28, 24 |
| Saco River Medical Group | — | — | Mar 26, 24 |
| Pembina County Memorial Hospital | — | — | Mar 25, 24 |
| Medical Board of California | — | misconfiguration | Mar 22, 24 |
| St. Mary's Healthcare System for Children, Inc. | — | — | Mar 20, 24 |
| Best Collateral Inc. | — | unknown | Mar 20, 24 |
| Sycamore Rehabilitation Services, Inc. | — | — | Mar 18, 24 |
| ALN Medical Management, LLC | — | third party | Mar 18, 24 |
| HealthEquity, Inc. | — | third party | Mar 9, 24 |
| Mity, Inc. | — | third party | Mar 6, 24 |
| Northeast Orthopedics and Sports Medicine, PLLC | — | — | Mar 5, 24 |
| Affiliated Dermatologists & Dermatologic Surgeons P.A. | — | third party | Mar 2, 24 |
| Spaulding Clinical Research, LLC | — | — | Mar 1, 24 |
| United Seating and Mobility L.L.C, dba Numotion | — | third party | Feb 29, 24 |
| Allergy Medical Group of the North Area, Inc. | — | third party | Feb 29, 24 |
| Ascension Health | — | ransomware | Feb 29, 24 |
| Bay Area Anesthesia, LLC (à �â � �Å �BAAà �â � � �) | — | — | Feb 26, 24 |
| Redwood Coast Regional Center | — | unknown | Feb 26, 24 |
| Calibrated Healthcare, LLC, on behalf of its customers' health plans | — | unknown | Feb 25, 24 |
| Calibrated Healthcare, LLC, on behalf of its covered entity clients | — | unknown | Feb 25, 24 |
| Calibrated Healthcare, LLC | — | unknown | Feb 25, 24 |
| Therapeutic Health Services | — | third party | Feb 24, 24 |
| Washington County Hospital and Nursing Home | — | — | Feb 23, 24 |
| Hematologics, Inc. | — | — | Feb 22, 24 |
| Kootenai Health | — | unknown | Feb 22, 24 |
| Marathon Pharmaceuticals, LLC/PTC Therapeutics, Inc. | — | unknown | Feb 21, 24 |
| Bristol Myers Squibb Company and Bristol Myers Squibb Patient Assistance Foundation | — | unknown | Feb 21, 24 |
| Bayer Corporation | — | unknown | Feb 21, 24 |
| Genentech, Inc. | — | unknown | Feb 21, 24 |
| AbbVie Inc. | — | unknown | Feb 21, 24 |
| Novartis Pharmaceuticals Corporation | — | third party | Feb 21, 24 |
| Regeneron Pharmaceuticals, Inc. | — | third party | Feb 21, 24 |
| Incyte Corporation | — | unknown | Feb 21, 24 |
| Sumitomo Pharma America, Inc. | — | unknown | Feb 21, 24 |
| Dendreon Pharmaceuticals LLC | — | unknown | Feb 21, 24 |
| Endo Pharmaceuticals Inc. | — | unknown | Feb 21, 24 |
| GlaxoSmithKline Group of Companies and the GlaxoSmithKline Patient Access Programs Foundation | — | unknown | Feb 21, 24 |
| Johnson & Johnson Patient Assistance Foundation, Inc. | — | vulnerability | Feb 21, 24 |
| Johnson & Johnson Services, Inc. | — | third party | Feb 21, 24 |
| Abbott | — | third party | Feb 21, 24 |
| Sandoz Inc. | — | unknown | Feb 21, 24 |
| Takeda Pharmaceuticals U.S.A., Inc. | — | unknown | Feb 21, 24 |
| Rayner Surgical Inc. | — | vulnerability | Feb 21, 24 |
| Otsuka America Pharmaceutical, Inc. | — | unknown | Feb 21, 24 |
| Heron Therapeutics, Inc. | — | vulnerability | Feb 21, 24 |
| Bausch Health Companies Inc. | — | unknown | Feb 21, 24 |
| Pfizer Inc. | — | unknown | Feb 21, 24 |
| Sanofi US Services Inc. | — | vulnerability | Feb 21, 24 |
| Acrotech Biopharma Inc. | — | unknown | Feb 21, 24 |
| CareDx, Inc. | — | unknown | Feb 21, 24 |
| TheraCom, L.L.C. | — | unknown | Feb 21, 24 |
| AmerisourceBergen Specialty Group, LLC | — | unknown | Feb 21, 24 |
| MWI Veterinary Supply, Inc. | — | unknown | Feb 21, 24 |
| American Renal Management LLC d/b/a Innovative Renal Care | — | unknown | Feb 21, 24 |
| Birth Choice of San Marco | — | unknown | Feb 19, 24 |
| Cardiothoracic and Vascular Surgeons, P.A. | — | — | Feb 16, 24 |
| ConnectOnCall.com, LLC | — | third party | Feb 16, 24 |
| North Hill Communities, Inc., North Hill Home Health Care, Inc., North Hill Needham, Inc., Connected for Life, Inc., and the North Hill Employee Dental Plan (collectively, à �â � �Å �North Hillà �â � � �), | — | — | Feb 15, 24 |
| Department of State Hospitals (DSH) | — | misconfiguration | Feb 15, 24 |
| Change Healthcare Inc. | — | unknown | Feb 12, 24 |
| Consulting Radiologists LTD. (“CRL”) | — | unknown | Feb 12, 24 |
| Tri-City Healthcare District | — | unknown | Feb 11, 24 |
| Los Angeles County - Department of Health Services | — | — | Feb 6, 24 |
| Amergis Healthcare Staffing, Inc. | — | third party | Feb 6, 24 |
| Valley Veterinary Clinic, LLC | — | vulnerability | Feb 4, 24 |
| Pomona Community Health Center dba ParkTree Community Health Center | — | unknown | Feb 1, 24 |
| Rebound Orthopedics & Neurosurgery | — | unknown | Feb 1, 24 |
| National Board of Osteopathic Medical Examiners | — | — | Jan 31, 24 |
| BioLife Plasma Services, L.P. | — | unknown | Jan 31, 24 |
| Around the Clock Companies | — | unknown | Jan 30, 24 |
| Signature Healthcare Services LLC | — | unknown | Jan 27, 24 |
| Ann & Robert H. Lurie Children’s Hospital Of Chicago | — | unknown | Jan 26, 24 |
| Dental Health Services | — | misconfiguration | Jan 25, 24 |
| Wellfleet Group, LLC | — | misconfiguration | Jan 20, 24 |
| Columbus Regional Healthcare System | — | — | Jan 19, 24 |
| Designed Receivable Solutions, Inc. | — | unknown | Jan 18, 24 |
| Bakersfield Rehabilitation Hospital | — | third party | Jan 16, 24 |
| Rehabilitation Hospital of Southern Califonia | — | vulnerability | Jan 16, 24 |
| Sacramento Rehabilitation Hospital | — | third party | Jan 16, 24 |
| Nassau OOGP Vision Group | — | hacking | Jan 12, 24 |
| NorthBay Healthcare Corporation | — | third party | Jan 11, 24 |
| CellNetix Pathology and Laboratories | — | — | Jan 10, 24 |
| UC San Diego Health Hillcrest - Hillcrest Medical Center | — | phishing | Jan 9, 24 |
| Orsini Pharmaceutical Services | — | phishing | Jan 8, 24 |
| Precision Tune Auto Care, Inc. (“PTAC”) | — | unknown | Jan 7, 24 |
| Delta Dental of California and its affiliates (Updated) | — | — | Dec 29, 23 |
| National Public Data | — | third party | Dec 29, 23 |
| Medusind, Inc. | — | unknown | Dec 29, 23 |
| Direct Radiology, PLLC | — | — | Dec 27, 23 |
| Oradell Animal Hospital | — | — | Dec 27, 23 |
| La Red Health Center | — | — | Dec 20, 23 |
| medQ, Inc. | — | third party | Dec 20, 23 |
| Sharp Health Plan | — | misconfiguration | Dec 19, 23 |
| Cornerstone Healthcare Group Management Services LLC | — | unknown | Dec 19, 23 |
| BBS Financial Services, LLC | — | ransomware | Dec 19, 23 |
| Self Esteem Brands, LLC | — | vulnerability | Dec 19, 23 |
| Harrisburg Medical Center (à �â � �Å �HMCà �â � � �) | — | — | Dec 12, 23 |
| INJECTABLE THERAPY SERVICES, INC | — | unknown | Dec 8, 23 |
| Hi-School Pharmacy | — | — | Dec 5, 23 |
| The May Institute, Inc. | — | unknown | Dec 4, 23 |
| Toshiba America Business Solutions, Inc. | — | vulnerability | Dec 4, 23 |
| Aetna Life Insurance Company - Amended/Updated | — | — | Dec 1, 23 |
| INTEGRIS Health | — | unknown | Nov 27, 23 |
| Supplemental Reporting- Robeson Health Care Corporation ("RHCC") | — | — | Nov 26, 23 |
| Fred Hutchinson Cancer Center | — | third party | Nov 19, 23 |
| Rancho Family Medical Group, Inc. | — | third party | Nov 19, 23 |
| Idaho National Laboratory operated by Battelle Energy Alliance, LLC | — | vulnerability | Nov 19, 23 |
| the group health plans of Stanford Health Care, of Stanford Health Care, Lucile Packard Children's Hospital Stanford, Stanford Health Care Tri-Valley, Stanford Medicine Partners, and Packard Children's Health Alliance | — | — | Nov 18, 23 |
| Wyoming County Community Health System | — | — | Nov 16, 23 |
| McAlester Regional Health Center | — | — | Nov 15, 23 |
| Endocrine and Psychiatry Center | — | — | Nov 14, 23 |
| Medical Management Resource Group, L.L.C., d.b.a. American Vision Partners | — | unknown | Nov 14, 23 |
| St. Bernards Healthcare, Inc. | — | — | Nov 13, 23 |
| Covenant Care California, LLC | — | unknown | Nov 12, 23 |
| Kaiser Foundation Hospitals, Northern California and The Permanente Medical Group, Inc. | — | insider | Nov 10, 23 |
| Fresno Surgical Hospital | — | third party | Nov 4, 23 |
| Dameron Hospital | — | unknown | Nov 4, 23 |
| Mulkay Cardiology Consultants at Holy Name Medical Center, P.C. (à �â � �Å �Mulkayà �â � � �) | — | — | Nov 3, 23 |
| PHL Variable Insurance Company in Rehabilitation | — | ransomware | Nov 2, 23 |
| CVC Holding Corp | — | ransomware | Nov 1, 23 |
| Deer Oaks- The Behavioral Health Solution | — | — | Oct 31, 23 |
| LivaNova USA, Inc. | — | unknown | Oct 26, 23 |
| FCDG Management LLC | — | ransomware | Oct 22, 23 |
| UNITE HERE | — | third party | Oct 20, 23 |
| Hair Club for Men, Ltd., Inc. (“Hair Club”) | — | vulnerability | Oct 18, 23 |
| Los Angeles County Department of Mental Health | 1,000,000 | phishing | Oct 17, 23 |
| Fairfax Oral and Maxillofacial Surgery | — | — | Oct 12, 23 |
| Akumin, Inc. | — | ransomware | Oct 11, 23 |
| A&A Services d/b/a Sav-Rx | — | third party | Oct 8, 23 |
| Lucent Health Solutions | — | unknown | Oct 2, 23 |
| Community First Medical Center | — | — | Sep 26, 23 |
| The Harris Center for Mental Health and IDD ("The Harris Center") | — | — | Sep 25, 23 |
| Okta, Inc. | — | third party | Sep 23, 23 |
| CSC ServiceWorks | — | third party | Sep 23, 23 |
| Mount Desert Island Hospital, Inc. | — | — | Sep 19, 23 |
| ESO Solutions, Inc. | — | ransomware | Sep 17, 23 |
| Monte Nido | — | unknown | Sep 16, 23 |
| NewGen Administrative Services, LLC | — | third party | Sep 14, 23 |
| Bloom Health Centers | — | — | Sep 11, 23 |
| Prestige Care, Inc. | — | malware | Sep 7, 23 |
| Bienville Orthopaedic Specialists LLC | — | — | Sep 5, 23 |
| NOW Health Group, Inc. | — | — | Sep 5, 23 |
| Acadia Health, LLC d/b/a Just Kids Dental | — | — | Sep 4, 23 |
| Postmeds, Inc. | — | unknown | Aug 30, 23 |
| American University of Antigua College of Medicine | — | unknown | Aug 30, 23 |
| Milan Eye Center | — | — | Aug 23, 23 |
| Fairfax Oral and Maxillofacial Surgery ("FOMS") | — | — | Aug 22, 23 |
| California Correctional Health Care Services | — | — | Aug 21, 23 |
| MNGI Digestive Health | — | unknown | Aug 20, 23 |
| Singing River Health System and its wholly owned subsidiary, Singing River Gulfport | — | ransomware | Aug 19, 23 |
| Hapy Bear Surgery Center | — | unknown | Aug 18, 23 |
| Morris Hospital & Healthcare Centers | — | — | Aug 17, 23 |
| Amgen Inc. | — | third party | Aug 16, 23 |
| Hospital Sisters Health Systems ("HSHS") | — | third party | Aug 16, 23 |
| Sightpath Medical, LLC | — | — | Aug 14, 23 |
| VNS Health Health Plans (à �â � �Å �VNSà �â � � �) | — | — | Aug 14, 23 |
| BrightSpring Healthcare Services, Inc. | — | — | Aug 11, 23 |
| Cummins Behavioral Health Systems, Inc. | — | — | Aug 11, 23 |
| Tift Regional Health System, Inc. | — | — | Aug 11, 23 |
| Colorado Department of Health Care Policy & Financing | — | — | Aug 11, 23 |
| Yakima Valley Radiology PC | — | unknown | Aug 11, 23 |
| The Newtron Group, L.L.C. | — | third party | Aug 2, 23 |
| ZOLL Medical Corporation | — | phishing | Aug 2, 23 |
| Cheyenne Radiology Group & MRI, P.C. | — | — | Aug 1, 23 |
| Synergy Healthcare Services | — | — | Jul 31, 23 |
| Prospect Medical Holdings, Inc. | — | unknown | Jul 31, 23 |
| Humana Inc | — | unknown | Jul 31, 23 |
| Maternal & Family Health Services, Inc | — | — | Jul 29, 23 |
| LifeWorks Wellness Center | — | — | Jul 26, 23 |
| The Johns Hopkins University, The Johns Hopkins Health System Corporation, and the Kennedy Krieger Institute | — | — | Jul 25, 23 |
| CareTree, Inc. on behalf of affected customers. | — | unknown | Jul 21, 23 |
| Peachtree Orthopaedic Clinic, P.A. | — | — | Jul 18, 23 |
| HealthEC filing on behalf of U.S. Renal Care, Inc. | — | unknown | Jul 14, 23 |
| Accreditation Commission for Education in Nursing, Inc. | — | — | Jul 12, 23 |
| Gary Motykie, M.D., a Medical Corporation | — | — | Jul 12, 23 |
| Navvis & Company, LLC | — | unknown | Jul 12, 23 |
| Western Washington Medical Group | — | third party | Jul 7, 23 |
| City of Hope | — | third party | Jul 7, 23 |
| Risas Dental & Braces | — | unknown | Jun 30, 23 |
| HCA Healthcare | — | misconfiguration | Jun 29, 23 |
| Precision Imaging Center | — | — | Jun 27, 23 |
| New Horizons Medical, Inc. | — | — | Jun 16, 23 |
| Beverly Hills Plastic Surgery | — | unknown | Jun 16, 23 |
| CDC Dental Management, Co., LLC dba Kids Care Dental & Orthodontics | — | unknown | Jun 15, 23 |
| Pomona Valley Hospital Medical Center | — | third party | Jun 10, 23 |
| Valley Power Systems, Inc. | — | unknown | Jun 9, 23 |
| SysInformation Healthcare Services, LLC d/b/a EqualizeRCM and 1st Credentialing | — | unknown | Jun 3, 23 |
| Kaiser Foundation Health Plan, Inc. | — | third party | Jun 1, 23 |
| Kisco Senior Living, LLC | — | vulnerability | Jun 1, 23 |
| Data Media Associates, LLC | — | vulnerability | May 31, 23 |
| CareSource | — | third party | May 31, 23 |
| Health Net Community Solutions | — | vulnerability | May 31, 23 |
| Sleep Data Holdings, LLC | — | vulnerability | May 31, 23 |
| Philips Respironics | — | vulnerability | May 31, 23 |
| The Vitality Group, LLC | — | vulnerability | May 30, 23 |
| American Board of Internal Medicine | — | third party | May 30, 23 |
| PH TECH | — | vulnerability | May 30, 23 |
| International Business Machines Corporation (“IBM”) | — | vulnerability | May 30, 23 |
| Sutter Health | — | vulnerability | May 30, 23 |
| Welltok, Inc. | — | vulnerability | May 30, 23 |
| Welltok, Inc. - Filing on behalf of a Covered Entity | — | vulnerability | May 30, 23 |
| Welltok, Inc. - Filing on behalf of multiple entities; please see Exhibit 1. | — | vulnerability | May 30, 23 |
| NASCO | — | third party | May 30, 23 |
| Welltok, Inc. - filing behalf of one entity; please see exhibit 1. | — | vulnerability | May 30, 23 |
| Bi-Bett Corporation | — | unknown | May 29, 23 |
| The Johns Hopkins University and The Johns Hopkins Health System Corporation | — | vulnerability | May 29, 23 |
| AltaMed Health Services | — | third party | May 29, 23 |
| Anthem Insurance Companies, Inc. on behalf of itself and its licensed affiliates | — | vulnerability | May 29, 23 |
| Aetna Life Insurance Company | — | third party | May 29, 23 |
| Sutter Senior Care | — | third party | May 28, 23 |
| American National Group, LLC | — | third party | May 28, 23 |
| Oak Ridge Associated Universities | — | vulnerability | May 28, 23 |
| Nuance Communications, Inc., o/b/o certain data controllers | — | third party | May 28, 23 |
| San Diego PACE | — | third party | May 28, 23 |
| State of Maine | — | third party | May 28, 23 |
| Medical Eye Services, Inc. | — | vulnerability | May 28, 23 |
| Colorado Department of Health Care Policy & Financing | — | third party | May 28, 23 |
| UnitedHealthcare Student Resources | — | third party | May 27, 23 |
| Delta Dental of California and affiliates | — | vulnerability | May 27, 23 |
| GEICO Corporation | — | vulnerability | May 27, 23 |
| Lineage, Inc | — | vulnerability | May 27, 23 |
| Albany ENT & Allergy Services, PC. | — | — | May 25, 23 |
| UC Davis Health | — | phishing | May 24, 23 |
| Life Generations Healthcare LLC ("LGH") | — | third party | May 24, 23 |
| edgeMED Healthcare, LLC | — | unknown | May 20, 23 |
| Bay Shore Brightwaters Rescue Ambulance, Inc. | — | — | May 16, 23 |
| Washington Convention and Sports Authority t/a Events DC | — | — | May 15, 23 |
| Uintah Basin Healthcare | — | — | May 12, 23 |
| Dr. Gary Motykie, M.D., a Medical Corporation | — | third party | May 9, 23 |
| Norton Healthcare, Inc. | — | ransomware | May 7, 23 |
| McPherson Hospital, Inc. | — | — | May 4, 23 |
| Deanco Healthcare LLC dba Mission Community Hospital | — | unknown | May 1, 23 |
| 23andMe, Inc. | — | credential stuffing | Apr 29, 23 |
| Desert Physicians Management | — | unknown | Apr 23, 23 |
| Taro Pharmaceuticals U.S.A., Inc. | — | — | Apr 21, 23 |
| Robeson Health Care Corporation ("RHCC") | — | — | Apr 21, 23 |
| Oak Valley Hospital District | — | unknown | Apr 21, 23 |
| One Brooklyn Health System | — | — | Apr 20, 23 |
| WebTPA Employer Services, LLC | — | third party | Apr 18, 23 |
| Momentum WORK, Inc | — | unknown | Apr 13, 23 |
| AlohaCare | — | vulnerability | Apr 7, 23 |
| Perry Johnson & Associates, Inc. (PJ&A) | — | unknown | Apr 7, 23 |
| Morris Hospital & Healthcare Centers | — | third party | Apr 4, 23 |
| CCM Health | — | unknown | Apr 3, 23 |
| NextGen Healthcare, Inc. | — | third party | Mar 29, 23 |
| Drug Free Workplaces USA, LLC | — | unknown | Mar 29, 23 |
| Harvard Pilgrim Health Care | — | ransomware | Mar 28, 23 |
| Atlantic General Hospital | — | — | Mar 24, 23 |
| Texas Medical Liability Trust | — | — | Mar 22, 23 |
| Hiawatha Harris MD, Inc. dba Pathways to Wellness Medication Clinics | — | third party | Mar 21, 23 |
| Bone & Joint Clinic, S.C. | — | — | Mar 20, 23 |
| Fertility Specialists Medical Group | — | third party | Mar 19, 23 |
| Richard T. Miller, DMD, PC, dba Great Neck/Mid Island Dental | — | — | Mar 17, 23 |
| Revance Therapeutics, Inc. | — | third party | Mar 15, 23 |
| Alatus Aerosystems LLC | — | third party | Mar 15, 23 |
| NorthStar Emergency Medical Services | — | — | Mar 14, 23 |
| Southwest Behavioral Health Center | — | unknown | Mar 13, 23 |
| PharMerica Corporation | — | third party | Mar 12, 23 |
| Palomar Health | — | third party | Mar 12, 23 |
| BrightSpring Health Services, Inc. | — | third party | Mar 12, 23 |
| Amerita | — | third party | Mar 12, 23 |
| Classic Residence Management Limited Partnership d/b/a Vi Senior Living (“Vi”) | — | third party | Mar 10, 23 |
| Health Plan Intermediaries Holdings | — | third party | Mar 10, 23 |
| Shasta Community Health Center (“Shasta”) | — | ransomware | Mar 9, 23 |
| Aloha Nursing Rehab Centre | — | — | Mar 4, 23 |
| Dental & Health Management Solutions | — | — | Mar 2, 23 |
| Oregon Academy of General Dentistry | — | — | Mar 1, 23 |
| MedsNow | — | — | Feb 26, 23 |
| Managed Care of North America, Inc. | — | unknown | Feb 26, 23 |
| Vascular Center of Intervention, Inc. | — | unknown | Feb 25, 23 |
| Texas Orthopaedics and Sports Medicine | — | — | Feb 23, 23 |
| EpiSource | — | misconfiguration | Feb 19, 23 |
| Great Expressions Dental Centers | — | third party | Feb 17, 23 |
| Transformative Healthcare | — | third party | Feb 17, 23 |
| Asian Health Services | — | third party | Feb 7, 23 |
| Kannact, Inc. | — | third party | Feb 6, 23 |
| Cooper Aerobics Enterprises, Inc. | — | unknown | Feb 3, 23 |
| US Wellness Inc. | — | unknown | Jan 31, 23 |
| County of Orange Office of Care Coordination | — | phishing | Jan 31, 23 |
| Santa Clara Family Health Plan | — | third party | Jan 30, 23 |
| Brightline, Inc. | — | third party | Jan 30, 23 |
| CHSPSC, LLC | — | vulnerability | Jan 28, 23 |
| California Physicians' Services d/b/a Blue Shield of California | 1,000,000 | vulnerability | Jan 28, 23 |
| Imagine360 | — | third party | Jan 28, 23 |
| Howard Memorial Hospital | — | — | Jan 27, 23 |
| Advanced Sterilization Products, Inc. | — | unknown | Jan 25, 23 |
| Center for Autism and Related Disorders | — | third party | Jan 24, 23 |
| EPIC MANAGEMENT LLC | — | third party | Jan 24, 23 |
| Health Plan of San Mateo | — | phishing | Jan 17, 23 |
| Capital Neurological Surgeons | — | phishing | Jan 17, 23 |
| Department of Health Care Services | — | third party | Jan 9, 23 |
| Retreat Behavioral Health | — | — | Dec 30, 22 |
| Fitzgibbon Hospital | — | — | Dec 30, 22 |
| California Physicians' Services d/b/a Blue Shield of California (BSC) | — | — | Dec 29, 22 |
| Legacy Operating Company d/b/a Legacy Hospice | — | — | Dec 22, 22 |
| Albertsons Companies, Inc. | — | malware | Dec 22, 22 |
| Nonstop Administration and Insurance Services, Inc. (“Nonstop”) on behalf of LifeLong Medical Care | — | vulnerability | Dec 22, 22 |
| Hawaiian Eye Center | — | — | Dec 19, 22 |
| Reventics, LLC | — | ransomware | Dec 15, 22 |
| Fremont County, Colorado | — | — | Dec 13, 22 |
| Highmark | — | phishing | Dec 13, 22 |
| MultiCare Health System, Inc. | — | — | Dec 12, 22 |
| THINK Surgical, Inc | — | — | Dec 8, 22 |
| 90 Degree Benefits Inc. - Wisconsin | — | vulnerability | Dec 5, 22 |
| Insulet Corporation | — | misconfiguration | Dec 1, 22 |
| Regal Medical Group, Inc. | — | ransomware | Dec 1, 22 |
| UnitedHealthcare | — | third party | Dec 1, 22 |
| The Hilb Group Operating Company, LLC | 1,069 | unknown | Dec 1, 22 |
| Multi-Fineline Electronix, Inc. (“MFLEX”) | — | unknown | Dec 1, 22 |
| Cardiovascular Associates | — | third party | Nov 28, 22 |
| Advanced Health Media (“AHM”), an IQVIA company, and clients of AHM. | — | unknown | Nov 27, 22 |
| Hope Health Systems Inc. | — | — | Nov 21, 22 |
| Gateway Rehabilitation Center | — | — | Nov 18, 22 |
| Hayward Sisters Hospital d/b/a St. Rose Hospital | — | unknown | Nov 18, 22 |
| 4 Over LLC | 2,790 | unknown | Nov 16, 22 |
| Resource Anesthesiology Associates of NM Inc | — | — | Nov 14, 22 |
| Rise Interactive Media & Analytics, LLC | — | unknown | Nov 14, 22 |
| General Health System, Inc. | — | — | Nov 4, 22 |
| United Veterinary Care | — | — | Nov 3, 22 |
| Frax Outsourcing, a subsidiary of TheKey, LLC | — | third party | Nov 2, 22 |
| San Gorgonio Memorial Hospital | — | third party | Oct 29, 22 |
| Resource Anesthesiology Associates of VA LLC | — | — | Oct 25, 22 |
| Resource Anesthesiology Associates PC | — | — | Oct 25, 22 |
| Anesthesia Associates of Maryland LLC | — | — | Oct 25, 22 |
| Resource Anesthesiology Associates of IL PC | — | — | Oct 25, 22 |
| Resource Anesthesiology Associates Of CT PC | — | — | Oct 25, 22 |
| Fredericksburg Anesthesia Associates LLC | — | — | Oct 25, 22 |
| Providence WA Anesthesia Services PC | — | — | Oct 25, 22 |
| MDLIVE Medical Group, (DE) P.A. | — | — | Oct 20, 22 |
| Country Doctor Community Health Clinic | — | — | Oct 19, 22 |
| MedStar Mobile Healthcare | — | third party | Oct 19, 22 |
| UnitedHealthcare "UHC" | — | — | Oct 10, 22 |
| Drs. Keith and Herman Rundle | — | third party | Oct 9, 22 |
| Community Research Foundation | — | unknown | Oct 6, 22 |
| Virginia Farm Bureau | — | unknown | Oct 6, 22 |
| The Elizabeth Hospice | — | insider | Oct 2, 22 |
| Texas Medical Liability Trust on behalf of itself and its affiliates, Texas Medical Insurance Company, Physicians Insurance Company, and Lone Star Alliance, Inc., a Risk Retention Group (collectively “TMLT”). | — | third party | Oct 2, 22 |
| Keck Medicine of USC | — | phishing | Sep 30, 22 |
| AMH Health, LLC and AMH Health Plans of Mail | — | — | Sep 28, 22 |
| Dyersburg Family Walk-In Clinic (d/b/a Reelfoot Family Walk-In Clinic) | — | — | Sep 23, 22 |
| Physician's Business Office | — | — | Sep 23, 22 |
| NationsBenefits Holdings, LLC | — | third party | Sep 18, 22 |
| Benefit Administrative Systems, LLC | — | unknown | Sep 17, 22 |
| Multi-Color Corporation | — | third party | Sep 15, 22 |
| UC San Diego Health | — | third party | Sep 13, 22 |
| SERV Behavioral Health Systems, Inc. | — | — | Sep 9, 22 |
| OrthoAlaska, LLC | — | unknown | Sep 6, 22 |
| Salud Family Health | — | third party | Sep 5, 22 |
| SCA Pharmaceuticals Inc. | — | — | Aug 29, 22 |
| Restorative Arts Physical Therapy, Inc. d/b/a Core Conditioning | — | third party | Aug 29, 22 |
| United States and Canadian Academy of Pathology | — | — | Aug 25, 22 |
| Gifted Healthcare | — | — | Aug 24, 22 |
| Finkelstein Eye Associates | — | — | Aug 15, 22 |
| Merritt Healthcare Advisors | — | phishing | Jul 30, 22 |
| Community Surgical Supply Inc. | — | — | Jul 29, 22 |
| FMC Services, LLC | — | third party | Jul 26, 22 |
| Northern California Fertility Medical Center | — | third party | Jul 24, 22 |
| Blue Cross and Blue Shield of Massachusetts, Inc. | — | — | Jul 20, 22 |
| Valencia Wilberding & Romero | — | third party | Jul 19, 22 |
| Connexin Software, Inc. | — | unknown | Jul 17, 22 |
| Medical Review Insititue of America | — | — | Jul 13, 22 |
| Anesthesia Services Of San Joaquin PC | — | third party | Jul 9, 22 |
| Resource Anesthesiology Associates of CA A Medical Corporation | — | third party | Jul 9, 22 |
| Primary Anesthesia Services | — | third party | Jul 9, 22 |
| Associated Eye Care | — | — | Jul 8, 22 |
| Premere Rehab, LLC / Signature Healthcare at Home / Avamere Health Services, LLC | — | — | Jul 6, 22 |
| Southwest Health Center | — | — | Jul 5, 22 |
| Independent Living Systems, LLC | — | unknown | Jun 30, 22 |
| Reiter Affiliated Companies, LLC, on behalf of itself and certain data owners | 1,000,000 | vulnerability | Jun 25, 22 |
| Peter Brasseler Holdings, LLC; Brasseler U.S.A. Dental, LLC; Brasseler U.S.A. Medical, LLC | — | ransomware | Jun 24, 22 |
| HealthPlan Services, Inc. | — | malware | Jun 22, 22 |
| Tessie Cleveland Community Services Corp. | — | unknown | Jun 17, 22 |
| Blue Shield of California (BSC) | — | insider | Jun 17, 22 |
| NORTH CAROLINA BOARD OF PHYSICAL THERAPY EXAMINERS | — | unknown | Jun 3, 22 |
| Three Rivers Provider Network | — | phishing | Jun 2, 22 |
| IMX Medical Management Services | — | malware | Jun 1, 22 |
| Acorda Therapeutics, Inc. | — | — | May 27, 22 |
| University of Chicago Medical Center | — | — | May 27, 22 |
| Schneck Medical Center | — | — | May 26, 22 |
| California Department of Corrections & Rehabilitation - California Correctional Health Care Services | 500 | misconfiguration | May 26, 22 |
| Val Verde Regional Medical Center ("VVRMC") | — | — | May 24, 22 |
| Allwell Behavioral Health Services | — | — | May 23, 22 |
| Kaiser Foundation Health Plan, Inc., Southern California | — | unknown | May 20, 22 |
| East Tennessee Children's Hospital Association Inc. | — | — | May 19, 22 |
| Behavioral Health Partners of Metrowest | — | — | May 11, 22 |
| Choice Health Insurance, LLC | — | third party | May 7, 22 |
| Humana | — | third party | May 7, 22 |
| Anthem Blue Cross | — | third party | May 7, 22 |
| Jackson County Hospital District | — | — | May 6, 22 |
| San Diego American Indian Health Center | — | unknown | May 5, 22 |
| Community Council of Nashua d/b/a Greater Nashua Mental Health (à �â � �Å �GNMHà �â � � �) | — | — | May 4, 22 |
| CCA Health Plans of California, Inc. d/b/a CCA Health California | — | unknown | May 4, 22 |
| Express Scripts, Inc. | — | third party | Apr 30, 22 |
| Valley View Hospital Association | — | — | Apr 28, 22 |
| Aetna | — | vulnerability | Apr 28, 22 |
| Summit Eye Associates, P.C. | — | — | Apr 27, 22 |
| Allied Eye Physicians & Surgeons, Inc. | — | — | Apr 27, 22 |
| OneTouchPoint, Inc | — | unknown | Apr 27, 22 |
| Puma Biotechnology, Inc. | — | unknown | Apr 22, 22 |
| Burkhart Dental Supply Co., Inc. | — | — | Apr 20, 22 |
| Medscan Laboratory, Inc. ("Adaptive Health Integrations") | — | — | Apr 18, 22 |
| AllCare Plus Pharmacy, Inc. ("AllCare") | — | unknown | Apr 14, 22 |
| Bucktail Medical Center | — | — | Apr 13, 22 |
| Practice Resources, LLC, on behalf of entities to which PRL provides professional services | — | ransomware | Apr 12, 22 |
| Michigan Avenue Immediate Care | — | third party | Apr 10, 22 |
| Leiters, Inc. | — | third party | Apr 6, 22 |
| Simply Dental Management, Inc. | — | — | Apr 5, 22 |
| Capsule | — | unknown | Apr 5, 22 |
| Physician's Business Office | — | unknown | Apr 5, 22 |
| Baptist Medical Center | — | third party | Mar 31, 22 |
| MCG Health | — | third party | Mar 31, 22 |
| TIC International Corporation | — | ransomware | Mar 30, 22 |
| ARx Patient Solutions | — | third party | Mar 30, 22 |
| Capital Region Medical Center | — | — | Mar 25, 22 |
| South Shore Hospital Corporation | — | — | Mar 24, 22 |
| Advanced Medical Practice Management (on behalf of the entities identified in Exhibit A to Exhibit 1) | — | — | Mar 23, 22 |
| Julieta Y. Echeverria D.D.S., Inc. | — | third party | Mar 23, 22 |
| Grandison Management, Inc. /Towne Home Care, LLC | — | — | Mar 22, 22 |
| Harney District Hospital | — | — | Mar 21, 22 |
| Partnership HealthPlan of California | — | unknown | Mar 19, 22 |
| Comstar, LLC | — | unknown | Mar 19, 22 |
| Clinivate, LLC | — | unknown | Mar 12, 22 |
| Norwood Clinic | — | — | Mar 8, 22 |
| Central Indiana Orthopedics | — | — | Mar 7, 22 |
| Shields Health Care Group, Inc. | — | unknown | Mar 7, 22 |
| Duncan Regional Hospital, Inc. | — | — | Mar 4, 22 |
| Salusive Health Inc./MyNurse | — | unknown | Mar 3, 22 |
| Jersey City Medical Center | — | — | Mar 2, 22 |
| BluePearl Specialty + Emergency Pet Hospital | — | — | Mar 1, 22 |
| FPS Medical Center | — | malware | Feb 28, 22 |
| Covenant Care California, LLC, on behalf of relevant home health agency | — | phishing | Feb 24, 22 |
| Alliance Physical Therapy Group, LLC | — | — | Feb 23, 22 |
| Community Psychiatry Management, LLC, dba Mindpath Health | — | third party | Feb 19, 22 |
| Livingston Memorial VNA Health Corporation and its affiliates Livingston Memorial Visiting Nurse Association and Livingston Caregivers | — | ransomware | Feb 19, 22 |
| Work Health Solutions | — | phishing | Feb 16, 22 |
| Sutter North Surgery Center | — | third party | Feb 9, 22 |
| Cross Timbers Health Clinics d/b/a AccelHealth | — | — | Feb 7, 22 |
| Injured Workers Pharmacy | — | — | Feb 3, 22 |
| Wright & Filippis | — | ransomware | Jan 26, 22 |
| Mellow Massage Hollywood | — | insider | Jan 25, 22 |
| Fishman Vision | — | third party | Jan 22, 22 |
| CorrectCare Integrated Health, Inc. | — | misconfiguration | Jan 22, 22 |
| Legacy Post Acute Care | — | phishing | Jan 19, 22 |
| Vail Health Services | — | — | Jan 18, 22 |
| Millennium Eye Care LLC | — | — | Jan 13, 22 |
| Marietta Area Health Care Inc. dba Memorial Health System | — | — | Jan 12, 22 |
| National Association of Community Health Centers (NACHC) | — | — | Jan 7, 22 |
| Jefferson Surgical Clinic | — | — | Jan 6, 22 |
| CVS Pharmacy | — | credential stuffing | Jan 6, 22 |
| Orange Business Services U.S., Inc. | — | vulnerability | Jan 4, 22 |
| Paramit Corporation | — | unknown | Dec 31, 21 |
| Alliance Physical Therapy Partners | — | unknown | Dec 23, 21 |
| Biolase, Inc. | — | unknown | Dec 21, 21 |
| California Department of Corrections and Rehabilitation | — | unknown | Dec 21, 21 |
| Southern Orthopaedic Associates d/b/a Orthopaedic Institute of Western Kentucky | — | — | Dec 20, 21 |
| Radiology Ltd. | — | unknown | Dec 17, 21 |
| Family Health Centers of San Diego | — | insider | Dec 15, 21 |
| DataPath, Inc. | — | unknown | Dec 15, 21 |
| Monongalia Health System, Inc. | — | third party | Dec 8, 21 |
| Quantum Imaging and Therapeutics Associates, Inc. | — | — | Dec 7, 21 |
| Wolfe Clinic, P.C. | — | unknown | Dec 4, 21 |
| San Diego Family Care | — | third party | Dec 3, 21 |
| Revival Animal Health | — | third party | Nov 24, 21 |
| Logan Health Medical Center | — | unknown | Nov 18, 21 |
| Renue Aesthetic Surgery | — | — | Nov 17, 21 |
| Fesmire & Williams | — | unknown | Nov 17, 21 |
| Major League Baseball Players Benefit Plan | — | phishing | Nov 12, 21 |
| University Hospital | — | — | Nov 3, 21 |
| Baywood Medical Associates, PLC dba Desert Pain Institute | — | — | Nov 3, 21 |
| Compton Eye Care Optometry | — | ransomware | Nov 3, 21 |
| Mowery Clinic | — | — | Nov 2, 21 |
| Medical Review Institute of America | — | unknown | Nov 2, 21 |
| National Imaging Associates, Inc. | — | insider | Nov 1, 21 |
| WellDyneRX, LLC | — | unknown | Oct 30, 21 |
| Quest Diagnostics | — | insider | Oct 29, 21 |
| Innovations Group, Inc., a subsidiary of UpHealth, Inc. | — | vulnerability | Oct 27, 21 |
| University Medical Center of Southern Nevada | — | — | Oct 26, 21 |
| Spectrum Eye Physicians | — | third party,vulnerability,ransomware | Oct 26, 21 |
| BioPlus Specialty Pharmacy Services, LLC | — | unknown | Oct 25, 21 |
| Alicia Surgery Center | — | third party | Oct 24, 21 |
| Chiropractique, Inc. | — | insider | Oct 17, 21 |
| North Broward Hospital District d/b/a Broward Health | — | third party | Oct 15, 21 |
| Community Medical Centers, Inc. | — | third party | Oct 10, 21 |
| Olympus Corporation of the Americas | — | third party | Oct 10, 21 |
| Planned Parenthood Los Angeles | — | unknown | Oct 9, 21 |
| Premier Patient Health Care | — | — | Oct 8, 21 |
| Alcon Vision, LLC | — | misconfiguration | Oct 5, 21 |
| The Menninger Clinic | — | — | Oct 4, 21 |
| Clinic of North Texas LLP | — | third party | Oct 4, 21 |
| Neuro Rehab Associates, Inc. d/b/a Northeast Rehabilitation Hospital Network | — | vulnerability | Sep 30, 21 |
| Ravkoo | — | third party | Sep 27, 21 |
| Medsurant Holdings, LLC | — | phishing | Sep 23, 21 |
| Central Texas Medical Specialists PLLC dba Austin Cancer Centers | — | — | Sep 15, 21 |
| Veterans Medical Research Foundation | — | unknown | Sep 13, 21 |
| Rehabilitation Support Services, Inc. | — | — | Sep 10, 21 |
| Lincare Holdings Inc. | — | unknown | Sep 10, 21 |
| HealthReach Community Health Centers | — | — | Sep 9, 21 |
| The Urology Center of Colorado ("TUCC") | — | unknown | Sep 7, 21 |
| Pandemic Response Lab | — | misconfiguration | Sep 6, 21 |
| Marquez Brothers International, Inc. | — | ransomware | Sep 1, 21 |
| AllOne Health | — | unknown | Sep 1, 21 |
| Utah Imaging Associates, Inc. | — | third party | Aug 29, 21 |
| Coro Medical, LLC | — | — | Aug 27, 21 |
| Blue Cross of California | — | ransomware | Aug 25, 21 |
| United Health Centers of the San Joaquin Valley | 56,352 | phishing | Aug 24, 21 |
| Barlow Respiratory Hospital | — | third party | Aug 21, 21 |
| Maternal and Family Health Services | — | ransomware | Aug 21, 21 |
| CalOptima | — | misconfiguration | Aug 10, 21 |
| ReproSource Fertility Diagnostics Inc. | — | ransomware | Aug 8, 21 |
| Foundation for Medical Care of Merced County | — | unknown | Aug 3, 21 |
| Anthem, Inc. | — | third party | Aug 3, 21 |
| JDC Healthcare Management LLC | — | malware | Jul 27, 21 |
| Super Care, Inc. dba SuperCare Health | — | unknown | Jul 23, 21 |
| Morley Companies, Inc. | — | ransomware | Jul 20, 21 |
| Sound Generations | — | unknown | Jul 18, 21 |
| Intermountain Healthcare | — | — | Jul 16, 21 |
| Buddhist Tzu Chi Medical Foundation | — | ransomware | Jul 15, 21 |
| Florida Heart Associates | — | — | Jul 14, 21 |
| Advent Health Partners, Inc. | — | third party | Jul 14, 21 |
| DuPage Medical Group, Ltd. | 1,000,000 | unknown | Jul 12, 21 |
| Lab Logistics | — | unknown | Jul 12, 21 |
| Vitreo-Retinal Medical Group, Inc. d/b/a Retinal Consultants Medical Group | — | unknown | Jul 12, 21 |
| Sierra Nevada Primary Care Physicians | — | third party | Jul 8, 21 |
| Resource Anesthesiology Association of California, a Medical Corporation | — | unknown | Jul 8, 21 |
| Coastal Family Health Center | — | — | Jul 7, 21 |
| Envision Pharma Group Ltd. | — | — | Jul 2, 21 |
| John Muir Health - Walnut Creek Medical Center | — | misconfiguration | Jul 1, 21 |
| ACE Surgical Supply Co., Inc. | — | unknown | Jun 29, 21 |
| Sequoia Concepts, Inc. | — | ransomware | Jun 28, 21 |
| Lucky Health Group d/b/a LuckyVitamin | — | — | Jun 17, 21 |
| Mevion Medical Systems | — | — | Jun 17, 21 |
| Little Hill Foundation for the Rehabilitation of Alcoholics, Inc. d/b/a Alina Lodge | — | — | Jun 16, 21 |
| Spectrum Pharmaceuticals, Inc. | — | — | Jun 16, 21 |
| University Medical Center of Southern Nevada ("UMC") | — | — | Jun 14, 21 |
| Healthpointe Medical Group, Inc. | — | vulnerability | Jun 9, 21 |
| Employee Benefits Administration & Management (“EBA&M”) | — | misconfiguration | Jun 4, 21 |
| Transform SR Holding Management LLC | — | unknown | Jun 3, 21 |
| Blue Cross and Blue Shield of Kansas City | — | — | Jun 2, 21 |
| Quality CPR Care LLC dba American CPR Care Association | — | malware | Jun 1, 21 |
| Sturdy Memorial Hospital | — | — | May 28, 21 |
| Forefront Management, LLC and Forefront Dermatology, S.C. | — | ransomware | May 28, 21 |
| HealthcareSource HR, Inc. | — | — | May 26, 21 |
| DNA Diagnostics Center, Inc. | — | misconfiguration | May 24, 21 |
| Navistar, Inc. | — | third party | May 20, 21 |
| Rehoboth McKinley Christian Health Care Services | — | — | May 19, 21 |
| Maximus, Inc. | — | unknown | May 17, 21 |
| Bay Alarm Medical, LLC | — | — | May 14, 21 |
| On Lok Senior Health Services | — | unknown | May 14, 21 |
| Gastroenterology Consultants P.A. | — | — | May 12, 21 |
| Internal Medicine Associates of Jasper, PC, dba Prestige Medical Group | — | — | May 10, 21 |
| Orthopedic Associates of Dutchess County | — | — | May 4, 21 |
| Scripps Health | — | malware | Apr 29, 21 |
| Smile Brands Inc. | — | ransomware | Apr 23, 21 |
| SightCare, Inc. | — | vulnerability | Apr 20, 21 |
| Nationwide Optometry, P.C. | — | unknown | Apr 20, 21 |
| U.S.Vision, Inc., | — | unknown | Apr 20, 21 |
| PracticeMax Inc. | — | ransomware | Apr 17, 21 |
| Pendrick Capital Partner Holdings, LLC | — | insider | Apr 12, 21 |
| The Dixie Group, Inc. | — | ransomware | Apr 9, 21 |
| AireSpring, Inc. | — | ransomware | Apr 7, 21 |
| Pharmavite LLC | — | phishing | Apr 6, 21 |
| The People Concern | — | phishing | Apr 6, 21 |
| Trusted Health Plans, Inc. | — | — | Apr 5, 21 |
| SEIU 775 Benefits Group | — | unknown | Apr 4, 21 |
| Ryan Specialty Group | — | phishing | Apr 4, 21 |
| Cardiva Medical, Inc. | — | — | Apr 1, 21 |
| India street clinic | — | — | Mar 27, 21 |
| Personal Touch Holding Corp., business associate to its direct and indirect subsidiaries Personal Touch Home Care of Greater Portsmouth, Inc., Personal Touch Home Care of S.E. Mass., Inc., Personal-Touch Home Care of N.Y., Inc., Personal Touch Home Care of Baltimore, Inc., Personal Touch Home Care of VA, Inc. and Personal Touch Home à �â � �â � �Aides, Inc. (MA) | — | — | Mar 25, 21 |
| K and B Surgical Center, LLC | — | vulnerability | Mar 24, 21 |
| Abode Services | — | third party | Mar 16, 21 |
| HOYA Optical Labs of America, Inc. | — | ransomware | Mar 15, 21 |
| DiCon Fiberoptics, Inc. | — | vulnerability | Mar 14, 21 |
| Assistcare Home Health Services LLC dba Preferred Home Care of New York/Preferred Gold | — | — | Mar 11, 21 |
| CA Department of State Hospitals | 219 | insider | Mar 11, 21 |
| The New London Hospital Association, Inc. | — | — | Mar 9, 21 |
| ConvenientMD Urgent Care | — | — | Mar 9, 21 |
| CSI Financial Services, LLC (“ClearBalance”) | — | phishing | Mar 8, 21 |
| Sandhills Medical Foundation, Inc. | — | — | Mar 5, 21 |
| Sonus Hearing Care Professionals | 3,100 | unknown | Mar 5, 21 |
| Summit Behavioral Healthcare | — | — | Feb 26, 21 |
| Liberty Healthcare Corporation | — | — | Feb 22, 21 |
| Northern California Medical Associates, Inc. | — | ransomware | Feb 19, 21 |
| Exceltox Laboratories | — | third party | Feb 15, 21 |
| Grand River Medical Group, P.C. | — | — | Feb 12, 21 |
| Orthopedic Associates of Hawaii | — | ransomware | Feb 12, 21 |
| ATC Healthcare Services, LLC | — | unknown | Feb 9, 21 |
| Marshall Medical Center | — | unknown | Feb 6, 21 |
| NEC Networks, LLC d/b/a CaptureRx | — | vulnerability | Feb 6, 21 |
| Tiburcio Vasquez Health Center Inc. | — | third party | Feb 6, 21 |
| St. John’s Well Child and Family Center, Inc. | — | unknown | Feb 3, 21 |
| ZocDoc, Inc. | — | vulnerability | Jan 21, 21 |
| Trinity Health | — | third party | Jan 20, 21 |
| Guidehouse on behalf of Community Memorial Health System located in Ventura, CA | — | third party | Jan 20, 21 |
| Montgomery Hospice, Inc. | — | — | Jan 15, 21 |
| Cancer Treatment Centers of America at Midwestern Regional Medical Center | — | phishing | Jan 12, 21 |
| Allergy Partners, PLLC | — | malware | Jan 12, 21 |
| Anthem, Inc. on behalf of its affiliated covered entities | — | third party | Jan 12, 21 |
| 20/20 Eye Care Network, Inc. | — | unknown | Jan 11, 21 |
| McDougall & Sons, Inc. | — | ransomware | Jan 10, 21 |
| Wilmington Surgical Associates, P.A. | — | — | Jan 8, 21 |
| California Health & Wellness | — | unknown | Jan 7, 21 |
| CalViva Health | — | third party | Jan 7, 21 |
| Health Net Life Insurance Company | — | third party | Jan 7, 21 |
| Health Net of California | — | third party | Jan 7, 21 |
| Saint Alphonsus Health System | — | unknown | Jan 4, 21 |
| Community Eldercare of San Diego dba St. Paul's PACE | — | unknown | Dec 31, 20 |
| Brandman Centers for Senior Care | — | — | Dec 28, 20 |
| Professional Business Systems d/b/a Practicefirst Medical Management Solutions and PBS Medcode Corp. | — | vulnerability | Dec 25, 20 |
| The Kroger Co. and its affiliated companies (“Kroger”) | — | vulnerability | Dec 24, 20 |
| Highmark Inc. | — | phishing | Dec 23, 20 |
| Radiology Associates of Albuquerque and Advanced Imaging, LLC. | — | unknown | Dec 22, 20 |
| Beverly Hills MD, LLC dba Beverly Hills MD | — | — | Dec 17, 20 |
| The PeaceHealth Affiliated Foundations | — | — | Dec 16, 20 |
| Central Florida Cardiology Group | — | — | Dec 15, 20 |
| Providence Mission Heritage Endocrinology | — | insider | Dec 15, 20 |
| Sea Mar Community Health Centers | — | unknown | Dec 12, 20 |
| Southern California Center for Anti-Aging | — | unknown | Dec 9, 20 |
| Dental Care Alliance, LLC | — | — | Dec 7, 20 |
| Caring Communities | — | third party | Dec 7, 20 |
| Entira Family Clinics | — | third party | Dec 4, 20 |
| Southern College of Optometry | — | — | Dec 2, 20 |
| Prominence Health Plan | 45,000 | third party | Nov 30, 20 |
| Nova Biomedical | — | — | Nov 25, 20 |
| Neighborhood Healthcare | — | ransomware | Nov 24, 20 |
| SafetyCall International | — | ransomware | Nov 24, 20 |
| Liberty Mutual Group, Inc. | — | third party | Nov 21, 20 |
| American College of Emergency Physicians (à �â � �Å �ACEPà �â � � �) | — | — | Nov 17, 20 |
| SAC Health System | — | third party | Nov 15, 20 |
| DJO Global, Inc. | — | unknown | Nov 8, 20 |
| California Massage Therapy Council | — | unknown | Nov 4, 20 |
| Donghyun Noh DMD, LLC d/b/a Pristine Dental | — | — | Nov 2, 20 |
| Total Vision, PC | — | third party | Oct 30, 20 |
| Harvard Eye Associates | — | third party | Oct 24, 20 |
| Health Center Partners of Southern California | — | third party | Oct 22, 20 |
| Underwriters Laboratories Inc and UL Inc. | — | vulnerability | Oct 17, 20 |
| Parkview Health System, Inc. ("Parkview") | — | — | Oct 12, 20 |
| SunMed Group Holdings, LLC | — | ransomware | Oct 11, 20 |
| Guardant Health, Inc. | — | misconfiguration | Oct 5, 20 |
| Backroads | — | ransomware | Oct 2, 20 |
| Maxim Healthcare Group | — | phishing | Oct 1, 20 |
| Preferred Care Home Health Services | — | — | Sep 28, 20 |
| Pennington Biomedical Research Foundation | — | — | Sep 28, 20 |
| GenRx Pharmacy | — | ransomware | Sep 27, 20 |
| Health Plan of San Joaquin (HPSJ) | — | phishing | Sep 26, 20 |
| Indian Health Council Inc. | — | unknown | Sep 22, 20 |
| The Baton Rouge Clinic, A Medical Corporation | — | — | Sep 17, 20 |
| UAMG, LLC | — | phishing | Sep 17, 20 |
| Medical Depot | — | — | Sep 14, 20 |
| Sonoma Valley Healthcare District | — | ransomware | Sep 10, 20 |
| MiniMed Distribution Corp | — | third party | Sep 10, 20 |
| Southern Mono Healthcare District d/b/a Mammoth Hospital | — | unknown | Sep 5, 20 |
| CCPOA Benefit Trust Fund | — | ransomware | Sep 2, 20 |
| National Board for Certified Counselors, Inc. | — | malware | Aug 31, 20 |
| Bosley, Inc. | — | malware | Aug 17, 20 |
| US Fertility LLC | — | ransomware | Aug 12, 20 |
| BioTel Heart (a trade name under which both CardioNet, LLC and LifeWatch, Inc. operate) | — | third party | Aug 9, 20 |
| Agoura Health Products, LLC dba Gundry MD | — | third party | Aug 6, 20 |
| FPI Management, Inc. | — | third party | Aug 6, 20 |
| Einstein Healthcare Network | — | phishing | Aug 5, 20 |
| Academic HealthPlans, Inc. | — | phishing | Aug 2, 20 |
| American Health Information Management Association (AHIMA) | — | unknown | Jul 26, 20 |
| The GEO Group Inc. | — | ransomware | Jul 17, 20 |
| ZEG – Berlin Center for Epidemiology and Health Research GMBH | — | malware | Jul 7, 20 |
| MEDNAX Services, Inc. | — | phishing | Jul 2, 20 |
| Sonoma Recovery Services, LLC d/b/a Olympia House | — | third party | Jul 1, 20 |
| County of Los Angeles Department of Public Health | 1,942 | misconfiguration | Jul 1, 20 |
| University Muslim Medical Association | — | insider | Jun 29, 20 |
| American Osteopathic Association | — | third party | Jun 25, 20 |
| EyeMed Vision Care LLC | — | phishing | Jun 24, 20 |
| Administrative Advantage, LLC obo Remedy Medical Group | — | unknown | Jun 23, 20 |
| Discovery Practice Management, Inc. | — | unknown | Jun 22, 20 |
| American Anesthesiology, Inc. | — | phishing | Jun 17, 20 |
| Hoag Clinic | 738 | unknown | Jun 5, 20 |
| City Dental | — | ransomware | Jun 1, 20 |
| CPR AED Course LLC dba American Health Care Academy | — | malware | Jun 1, 20 |
| Walgreen Co. | — | unknown | May 26, 20 |
| Medical Depot, Inc., d/b/a Drive DeVilbiss Healthcare | — | third party | May 25, 20 |
| Dr. Ann Hale, D.D.S. / also known as Hutton & Hale, D.D.S. | — | unknown | May 24, 20 |
| Assured Imaging | — | ransomware | May 19, 20 |
| Enloe Medical Center | — | third party | May 14, 20 |
| Northern Light Health | — | ransomware | May 14, 20 |
| Joslin Diabetes Center, Inc. | — | ransomware | May 14, 20 |
| Valley Presbyterian Hospital | — | ransomware | May 14, 20 |
| Summit Behavioral Healthcare, LLC | — | unknown | May 12, 20 |
| Amphastar Pharmaceuticals, Inc. | — | ransomware | May 2, 20 |
| Polycystic Kidney Disease Foundation | — | ransomware | May 1, 20 |
| Alameda Health System | — | third party | Apr 30, 20 |
| Central California Alliance for Health | — | unknown | Apr 28, 20 |
| Allergy & Asthma Medical Group of the Bay Area, Inc. | — | unknown | Apr 27, 20 |
| Salinas Valley Memorial Healthcare System | — | phishing | Apr 24, 20 |
| Health Formula Inc. | — | vulnerability | Apr 24, 20 |
| Optima Family Services, Inc. | — | ransomware | Apr 21, 20 |
| CodeMetro | — | ransomware | Apr 21, 20 |
| Ascend Clinical LLC | — | unknown | Apr 21, 20 |
| Andrew Dang, DDS | — | unknown | Apr 19, 20 |
| Coalinga Valley Health Clinics, Inc. | — | insider | Apr 17, 20 |
| US HealthCenter, Inc. | — | phishing | Apr 13, 20 |
| Comprehensive Health Services | — | vulnerability | Apr 9, 20 |
| American College of Emergency Physicians ("ACEP") | — | unknown | Apr 8, 20 |
| Magellan Health, Inc. | — | ransomware | Apr 6, 20 |
| Florida Orthopaedic Institute | — | ransomware | Apr 6, 20 |
| Angeion Group | — | third party | Mar 30, 20 |
| American Society for Clinical Pathology | — | unknown | Mar 30, 20 |
| Auris Health, Inc. | — | phishing | Mar 15, 20 |
| Hospice by the Bay | — | phishing | Mar 10, 20 |
| Patriot Growth Insurance Services, LLC | — | phishing | Mar 10, 20 |
| Bruce L. Boros, M.D., P.A. DBA Advanced Urgent Care | — | ransomware | Mar 1, 20 |
| Maternity IP Holdings, LLC | — | unknown | Mar 1, 20 |
| HCI LLC | — | phishing | Feb 21, 20 |
| Emanate Health | — | third party | Feb 19, 20 |
| Community Memorial Health System | — | third party | Feb 18, 20 |
| Prostate Cancer Foundation | — | ransomware | Feb 7, 20 |
| Saint Luke's Foundation | — | ransomware | Feb 7, 20 |
| Hydrocephalus Association | — | third party | Feb 7, 20 |
| Emanate Health Foundation | — | ransomware | Feb 7, 20 |
| California Dialysis Management Services, Inc. | — | third party | Feb 7, 20 |
| Living Beyond Breast Cancer | — | ransomware | Feb 7, 20 |
| Rady Children’s Hospital – San Diego and Rady Children’s Hospital Foundation – San Diego | — | third party | Feb 7, 20 |
| Granite Wellness Centers | — | ransomware | Feb 7, 20 |
| International Medical Corps | — | ransomware | Feb 7, 20 |
| Santa Catalina School | — | third party | Feb 7, 20 |
| MailMyPrescriptions.com Pharmacy Corporation | — | insider | Feb 3, 20 |
| Methodist Hospital of Southern California | — | ransomware | Feb 1, 20 |
| University of Minnesota Physicians | — | phishing | Jan 30, 20 |
| Ambry Genetics Corporation | — | unknown | Jan 22, 20 |
| Tandem Diabetes Care, Inc. | — | phishing | Jan 17, 20 |
| Stockdale Radiology | — | ransomware | Jan 17, 20 |
| Orchard Medical Consulting | — | unknown | Jan 16, 20 |
| Santa Rosa & Rohnert Park Oral Surgery | — | unknown | Dec 20, 19 |
| Foundation Medicine, Inc. | — | phishing | Dec 17, 19 |
| Overlake Medical Center & Clinics | — | phishing | Dec 6, 19 |
| Doctors Medical Center of Modesto | — | misconfiguration | Dec 1, 19 |
| VEP Healthcare, Inc. | — | — | Nov 15, 19 |
| Pacific Guardian Life Insurance Co. Ltd. | 1,214 | phishing | Nov 4, 19 |
| Healthcare Resource Group, Inc. | — | third party | Nov 4, 19 |
| Golden Valley Health Centers | — | third party | Oct 25, 19 |
| AFTRA Retirement Fund | — | third party | Oct 24, 19 |
| Good Samaritan Hospital, Inc. | — | phishing | Oct 22, 19 |
| Western Health Advantage | — | third party | Oct 20, 19 |
| INTEGRIS Baptist Medical Center, Inc. | — | unknown | Oct 17, 19 |
| Elwyn | — | unknown | Oct 9, 19 |
| Kaiser Health Plan, Southern California | — | misconfiguration | Oct 6, 19 |
| American Medical Technologies | — | unknown | Oct 1, 19 |
| Stericycle, Inc. | — | phishing | Oct 1, 19 |
| Blue Cross Blue Shield Association | — | third party | Sep 28, 19 |
| Baylor Genetics | — | phishing | Sep 24, 19 |
| Atria Senior Living | — | phishing | Sep 18, 19 |
| CA Department of State Hospitals - Coalinga | — | insider | Aug 27, 19 |
| NYR Organic, Inc. | — | phishing | Aug 21, 19 |
| VibrantCare Rehabilitation, Inc. | — | insider | Aug 20, 19 |
| Kaiser Permanente | — | unknown | Aug 12, 19 |
| Telecare Corporation | — | phishing | Jul 25, 19 |
| Central Valley Regional Center | 11,990 | third party | Jul 25, 19 |
| Aveanna Healthcare | 5,004 | unknown | Jul 9, 19 |
| Hospice of San Joaquin | — | ransomware | Jul 2, 19 |
| Sutter Buttes Imaging Medical Group, Inc. | — | third party | Jul 1, 19 |
| Rady Children's Hospital San Diego | — | misconfiguration | Jun 20, 19 |
| Torrance Memorial Medical Center | — | misconfiguration | Jun 20, 19 |
| AliMed, Inc. | — | unknown | Jun 1, 19 |
| Delta Health Systems | — | misconfiguration | May 27, 19 |
| Your Patient Advisor by Captify Health | — | vulnerability | May 26, 19 |
| Kalisepell Regional Healthcare | — | phishing | May 24, 19 |
| Avalara, Inc. | — | third party | May 22, 19 |
| Presbyterian Healthcare Services | — | phishing | May 9, 19 |
| Northwood, Inc. | — | phishing | May 3, 19 |
| Nutraceutical Wellness Inc. dba Nutrafol | — | third party | Apr 10, 19 |
| Apria Healthcare LLC | — | third party | Apr 5, 19 |
| Solara Medical Supplies, LLC | — | phishing | Apr 2, 19 |
| Eversana Life Sciences Services, LLC | — | third party | Apr 1, 19 |
| Nemadji Research Corporation d/b/a California Reimbursement Enterprises | — | phishing | Mar 28, 19 |
| FlexCare, LLC d/b/a FlexCare Medical Staffing | — | — | Mar 26, 19 |
| St. Vincent Medical Center | — | — | Mar 15, 19 |
| Gary W. Peer, M.D. | — | unknown | Mar 13, 19 |
| Health Net of California and Health Net Life Insurance Company | — | misconfiguration | Mar 1, 19 |
| American Indian Health & Services, Inc. | — | insider | Feb 26, 19 |
| Gardner Family Health Network | 5,064 | unknown | Feb 19, 19 |
| CorVel Enterprise Comp Inc. | — | insider | Feb 14, 19 |
| International Rehabilitative Sciences, Inc. dba RS Medical | — | — | Feb 11, 19 |
| Dr. T.Y. Steven Ip M.D. F.A.C.S. | — | ransomware | Feb 6, 19 |
| Immediata Health Group Corp. | — | misconfiguration | Jan 22, 19 |
| Abbott Laboratories | — | third party | Jan 19, 19 |
| Vitagene, Inc. | — | vulnerability | Jan 18, 19 |
| Verity Medical Foundation | — | third party | Jan 16, 19 |
| Department of Rehabilitation | — | misconfiguration | Jan 9, 19 |
| Centrelake Medical Group, Inc. | 195,144 | third party | Jan 9, 19 |
| University of Washington Medical Center (“UWM”) | — | misconfiguration | Dec 4, 18 |
| Verity Health System | — | third party | Nov 27, 18 |
| Abel HR | 710 | phishing | Nov 11, 18 |
| Raley's/Bel Air Mart/Nob Hill General Store, Inc. | — | unknown | Sep 24, 18 |
| EmCare, Inc., Sheridan Healthcorp, Inc. and their affiliates | — | third party | Sep 24, 18 |
| American Medical Response, Inc. | — | phishing | Sep 24, 18 |
| Atrium Health (formerly Carolinas HealthCare System) | — | third party | Sep 22, 18 |
| Redwood Eye Center | 16,055 | ransomware | Sep 19, 18 |
| Blood Systems, Inc. | — | vulnerability | Aug 29, 18 |
| RSC Insurance Brokerage, Inc. | — | third party | Aug 23, 18 |
| UConn Health | — | third party | Aug 20, 18 |
| Surgerical Specialties of Arroyo Grande, LLC, dba Oak Park Surgery Center | — | — | Aug 8, 18 |
| Laboratory Corporation of America Holdings | — | third party | Aug 1, 18 |
| Sunrise Medical Laboratories, Inc. | — | third party | Aug 1, 18 |
| Clinical Pathology Laboratories, Inc. | — | third party | Aug 1, 18 |
| Laboratory Medicine Consultants, Ltd. | — | third party | Aug 1, 18 |
| Western Pathology | — | third party | Aug 1, 18 |
| Sierra View Medical Center | — | — | Jul 27, 18 |
| Pharmaca Integrative Pharmacy Inc. | — | malware | Jul 19, 18 |
| Envision Healthcare Corporation | — | third party | Jul 17, 18 |
| Health Quest Systems, Inc. | — | phishing | Jul 11, 18 |
| Pharmacy Times Office of Continuing Professional Education ("PTCE") | — | misconfiguration | Jul 6, 18 |
| Gallagher Bassett Services, Inc. | 1,294 | third party | Jul 5, 18 |
| BioMarin Pharmaceutical Inc. | — | phishing | Jun 18, 18 |
| Centerstone Insurance and Financial Services d/b/a BenefitMall | — | phishing | Jun 13, 18 |
| Authentic Recovery Center, LLC | — | third party | Jun 7, 18 |
| Bankers Life (BL) - BL is the marketing brand of Bankers Life and Casualty Co., Medicare Supplement insurance policies sold by Colonial Penn Life Insurance Co. and select policies sold in NY by Bankers Conseco Life Insurance Company, a NY licensed ins. co | — | third party | May 30, 18 |
| Institute on Aging | 3,907 | unknown | May 28, 18 |
| California Physicians' Service d/b/a Blue Shield of California | — | third party | May 22, 18 |
| Hunt Regional Medical Center | — | unknown | May 18, 18 |
| Elmcroft Senior Living, Inc. | — | third party | May 10, 18 |
| El Centro Regional Medical Center | — | third party | May 8, 18 |
| Advocate Sherman Hospital ("Sherman") | — | third party | May 8, 18 |
| Citrus Valley Health Partners | — | third party | May 8, 18 |
| MSK Group, P.C. | — | ransomware | May 7, 18 |
| Amarin Pharma, Inc. | — | misconfiguration | May 2, 18 |
| Denise M. Bowden, LAc | 503 | unknown | Apr 28, 18 |
| MedEvolve | — | misconfiguration | Mar 29, 18 |
| California Department of Public Health | — | third party | Mar 12, 18 |
| Quality-Care Pharmacy | — | unknown | Mar 11, 18 |
| Sonoma County Indian Health Project, Inc. | — | insider | Mar 8, 18 |
| Local Initiative Health Authority of Los Angeles County, doing business as L.A. Care Health Plan | — | misconfiguration | Mar 1, 18 |
| Amgen, Inc. | — | phishing | Feb 21, 18 |
| Center for Orthopaedic Specialists | — | third party | Feb 18, 18 |
| Hair Free Forever | — | insider | Feb 15, 18 |
| CA Dept. Developmental Services | — | unknown | Feb 11, 18 |
| North American Risk Services, Inc. | — | phishing | Feb 7, 18 |
| White and Bright Family Dental | — | unknown | Feb 1, 18 |
| Milligan Chiropractic Group, Inc. d/b/a Del Mar Chiropractic Sports Group | 2,584 | unknown | Jan 31, 18 |
| Thermo Fisher Scientific Inc. | — | third party | Jan 23, 18 |
| Capitol Administrators, Inc. | — | phishing | Jan 7, 18 |
| Steven Yang, D.D.S., INC. | — | unknown | Jan 6, 18 |
| CareMeridian, LLC | 966 | third party | Dec 21, 17 |
| Santa Cruz Biotechnology, Inc. | — | unknown | Dec 17, 17 |
| Inogen, Inc. | 3,251 | insider | Dec 9, 17 |
| Muir Medical Group, IPA. Inc. | — | insider | Dec 7, 17 |
| Rehabilitation | — | misconfiguration | Nov 22, 17 |
| Providence Saint John's Health Center | — | third party | Nov 20, 17 |
| The Affiliated Group | 1,289 | phishing | Nov 20, 17 |
| Pedes Orange County | — | third party | Nov 14, 17 |
| Nevro Corporation | — | third party | Nov 11, 17 |
| Quest Nutrition | — | phishing | Nov 10, 17 |
| Sheldon M. Golden O.D., Optometric Corporation | — | ransomware | Nov 6, 17 |
| Children's Hospital Los Angeles | — | misconfiguration | Nov 6, 17 |
| California Physicians’ Service, d/b/a Blue Shield of California | — | insider | Nov 1, 17 |
| Gordon Schanzlin New Vision Institute | 9,351 | misconfiguration | Oct 25, 17 |
| Los Angeles County Department of Mental Health (LACDMH) | — | insider | Oct 24, 17 |
| National Capital Poison Center (“NCPC”) | — | ransomware | Oct 21, 17 |
| Worldwide Services Insurance Agency, LLC | — | phishing | Oct 11, 17 |
| Port City Operating Company, doing business as St. Joseph's Medical Center | — | — | Oct 9, 17 |
| Ron's Pharmacy Services | — | credential stuffing | Oct 3, 17 |
| Kaiser Permanente Health Plan | — | misconfiguration | Sep 18, 17 |
| Corovan Corporation | 733 | misconfiguration | Sep 14, 17 |
| Dignity Health - Mercy San Juan Medical Center | — | — | Sep 8, 17 |
| SyncHR, Inc. | — | unknown | Aug 23, 17 |
| FastHealth Corporation | — | third party | Aug 14, 17 |
| Kaiser Foundation Health Plan | — | misconfiguration | Aug 9, 17 |
| SAY San Diego | — | misconfiguration | Aug 1, 17 |
| Pacific Alliance Medical Center | — | vulnerability | Jun 14, 17 |
| Occidental College | — | unknown | Jun 1, 17 |
| Andrea Yaley, DDS | — | ransomware | May 19, 17 |
| TRUEbenefits LLC | — | phishing | May 18, 17 |
| University of California Davis Health | — | phishing | May 17, 17 |
| Sunshine Behavioral Health Group, LLC | — | misconfiguration | Mar 1, 17 |
| White Blossom Care Center | 800 | insider | Feb 24, 17 |
| Orange County Global Medical Center | — | insider | Feb 8, 17 |
| Sharp Memorial Hospital | — | unknown | Feb 6, 17 |
| CCHCS | — | insider | Jan 23, 17 |
| Urology Austin | — | ransomware | Jan 22, 17 |
| eHealthInsurance Services, Inc. | — | unknown | Jan 20, 17 |
| Castro Valley Health, Inc. | — | third party | Jan 1, 17 |
| Universal Care DBA Brand New Day | — | third party | Dec 22, 16 |
| Tarleton Medical | — | vulnerability | Dec 14, 16 |
| Wonderful Center for Health Innovation | — | unknown | Dec 12, 16 |
| Synergy Specialists Medical Group, Inc. | — | phishing | Dec 5, 16 |
| Hand & Upper Extremity Centers dba Hand Rehabilitation Specialists | — | unknown | Nov 1, 16 |
| The California Department of Corrections and Rehabilitation | — | — | Oct 28, 16 |
| East Valley Community Health Center, Inc. | — | ransomware | Oct 18, 16 |
| Kaiser Permanente Health Plan, Inc of Northern California | — | vulnerability | Oct 12, 16 |
| EmblemHealth | — | misconfiguration | Oct 3, 16 |
| mscripts, LLC | — | misconfiguration | Sep 30, 16 |
| La Quinta Center for Cosmetic Dentistry | — | — | Aug 26, 16 |
| Integrity Transitional Hospital | — | unknown | Aug 15, 16 |
| Napa Valley Dentistry | — | third party | Aug 11, 16 |
| Pratap S. Kurra, M.D. | — | misconfiguration | Aug 8, 16 |
| Apria Healthcare | 912 | phishing | Aug 5, 16 |
| Yuba Sutter Medical Clinic | — | — | Aug 3, 16 |
| USC Keck and Norris Hospitals | — | — | Aug 1, 16 |
| Hal Meadows, M.D. | — | unknown | Jul 27, 16 |
| Curtis F. Robinson, M.D. Inc. | — | malware | Jul 26, 16 |
| Anne M. Cummings, M.D., F.A.C.P. | — | ransomware | Jul 26, 16 |
| Eye Institute of Marin | — | ransomware | Jul 26, 16 |
| John E. Gonzalez DDS | 1,000 | unknown | Jul 25, 16 |
| Brian Goldman, MD A Medical Corporation | — | unknown | Jul 19, 16 |
| Public Health Institute | — | misconfiguration | Jul 4, 16 |
| Banner Health | — | unknown | Jun 17, 16 |
| Value Eyecare Network, Inc. d/b/a 39dollarglasses.com | 14,647 | vulnerability | Jun 4, 16 |
| inVentiv Health, Inc. | — | phishing | Jun 2, 16 |
| Mercy Medical Center Redding | — | insider | Jun 1, 16 |
| Symphonix Health | — | unknown | May 21, 16 |
| Empathia, Inc. | — | misconfiguration | May 17, 16 |
| Saint Agnes Medical Center | 2,812 | phishing | May 2, 16 |
| CDCR - California Health Care Facility | — | — | May 2, 16 |
| Silver Creek Fitness & Physical Therapy, Silver Creek Physical Therapy Gilroy, Silver Creek Physical Therapy Sunnyvale, Silver Creek Physical Therapy Los Gatos | — | misconfiguration | May 1, 16 |
| Luque Chiropractic, Inc. | — | misconfiguration | May 1, 16 |
| Berkeley Endocrine Clinic | — | misconfiguration | Apr 22, 16 |
| Bon Secours Health System, Inc. | — | misconfiguration | Apr 18, 16 |
| Valley Anesthesiology Consultants, Inc. d/b/a Valley Anesthesiology and Pain Consultants | — | third party | Mar 30, 16 |
| Imperial Valley Family Care Medical Group, APC | — | — | Mar 21, 16 |
| OptumRx | — | third party | Mar 16, 16 |
| The Whiting-Turner Contracting Company ("Whiting-Turner") | — | third party | Mar 8, 16 |
| dōTERRA International, LLC | — | third party | Mar 4, 16 |
| SCAN Health Plan | — | unknown | Mar 4, 16 |
| Community Family Care Medical Group IPA, Inc | — | third party | Feb 29, 16 |
| Laborers Funds Administrative Office of Northern California, Inc. | — | misconfiguration | Feb 17, 16 |
| Alliance Health Networks, LLC | — | unknown | Feb 3, 16 |
| CoPilot Provider Support Services, Inc. | — | third party | Jan 31, 16 |
| Fairchild Medical Center | — | misconfiguration | Dec 16, 15 |
| HealthEquity | — | insider | Dec 11, 15 |
| Cottage Health | 11,000 | misconfiguration | Oct 26, 15 |
| George Hills Company, Inc. | — | misconfiguration | Sep 3, 15 |
| Community Catalysts of California | — | third party | Aug 31, 15 |
| Washington Township Health Care District | — | unknown | Aug 26, 15 |
| Dominican Hospital | — | — | Jul 16, 15 |
| North East Medical Services | — | third party | Jul 11, 15 |
| ROBERT SOPER, M.D. | — | unknown | Jun 27, 15 |
| Samela, Inc. d/b/a NorthShore Care Supply | — | vulnerability | Jun 7, 15 |
| orlantino dyoco, M.D. | — | unknown | Jun 3, 15 |
| East Bay Perinatal Medical Associates | — | insider | Jun 1, 15 |
| Medical Informatics Engineering and NoMoreClipboard, a wholly owned subsidiary of Medical Informatics Engineering | — | vulnerability | May 7, 15 |
| Stanislaus Surgical Hospital | — | — | Apr 5, 15 |
| Molina Healthcare of California, Inc. | — | insider | Mar 26, 15 |
| Sharon J. Jones, M.D. | 17 | unknown | Mar 20, 15 |
| Tulare County Health & Human Services Agency | 845 | insider | Mar 19, 15 |
| Premera Blue Cross, including Academe, Inc. (formerly known as LifeWise Health Plan of Arizona, Inc.), Connexion Insurance Solutions, Inc., Life Wise Health Plan of Washington, Life Wise Health Plan of Oregon, Inc., LifeWise Assurance Company, Vivacity | — | — | Mar 3, 15 |
| James R. Glidewell, Dental Ceramics, Inc. and its subsidiaries | — | insider | Feb 28, 15 |
| Valley Community Healthcare | — | unknown | Feb 24, 15 |
| American Sleep Medicine | — | unknown | Jan 24, 15 |
| Bay Area Children's Association | — | malware | Jan 15, 15 |
| Cathrine Steinborn DDS | — | unknown | Jan 5, 15 |
| Kaiser Foundation Hospitals, Northern California | — | insider | Jan 1, 15 |
| Contra Costa Health Plan | — | insider | Dec 1, 14 |
| Empi, Inc./DJO, LLC | 14,000,000 | third party | Nov 7, 14 |
| Physicians Skin and Weight Centers, Inc. | — | insider | Nov 4, 14 |
| Providence Saint Joseph Medical Center | — | insider | Nov 1, 14 |
| Inland Empire Health Plan (IEHP) | — | third party | Oct 28, 14 |
| IDParts, LLC | 1,500,000 | ransomware | Oct 17, 14 |
| Hillsides | — | insider | Oct 10, 14 |
| The Painted Turtle | — | misconfiguration | Oct 2, 14 |
| University of California Davis Medical Center | — | unknown | Sep 25, 14 |
| UCLA Health | — | unknown | Sep 21, 14 |
| 21st Century Oncology | — | third party | Sep 2, 14 |
| County of Napa, Health and Human Services Agency, Comprehensive Services for Older Adults | — | — | Aug 27, 14 |
| Cedars-Sinai Health System | — | unknown | Jun 23, 14 |
| CVS Pharmacy, Inc. | — | third party | Jun 19, 14 |
| Riverside County Regional Medical Center | — | unknown | Jun 17, 14 |
| Santa Rosa Memorial Hospital | — | third party | Jun 2, 14 |
| Mercy Medical Center Redding Oncology Clinic | — | third party | Jun 1, 14 |
| Record Assist LLC | — | unknown | May 28, 14 |
| Department of Managed Health Care | — | misconfiguration | May 16, 14 |
| Community Health Systems Professional Services Corporation | — | malware | Apr 10, 14 |
| St. Joseph Health | — | insider | Feb 18, 14 |
| Sutherland Healthcare Solutions | — | unknown | Feb 5, 14 |
| L.A. Care Health Plan | — | misconfiguration | Jan 22, 14 |
| UCSF Family Medicine Center at Lakeshore | — | vulnerability | Jan 11, 14 |
| AppleCare Insurance Services, Inc. | — | third party | Jan 1, 14 |
| The Lifetime Healthcare Companies, including its affiliates Excellus BlueCross BlueShield, Lifetime Health Medical Group, Lifetime Benefit Solutions, Lifetime Care, The MedAmerica Companies, and Univera Healthcare | — | — | Dec 23, 13 |
| Robert Meaglia, DDS | — | — | Dec 16, 13 |
| St. Joseph Health System | — | vulnerability | Dec 16, 13 |
| Easter Seal Society of Superior California | — | insider | Dec 10, 13 |
| San Mateo Medical Center | — | — | Dec 5, 13 |
| Beacon Health System | — | unknown | Nov 19, 13 |
| Horizon Healthcare Services, Inc.,dba Horizon Blue Cross Blue Shield of New Jersey, and its affiliates | — | — | Nov 1, 13 |
| Kathleen E. Whisman MD | — | misconfiguration | Oct 20, 13 |
| California Pacific Medical Center | 844 | insider | Oct 15, 13 |
| Sebastopol Sea Serpents | — | insider | Oct 13, 13 |
| AHMC Healthcare, Inc and affiliated hospitals | 729,000 | unknown | Oct 12, 13 |
| Kaiser Foundation Hospital Orange County, Anaheim Medical Center | — | — | Sep 25, 13 |
| Eureka Internal Medicine | — | third party | Sep 25, 13 |
| Cottage Health System | — | third party | Sep 23, 13 |
| Santa Clara Valley Medical Center | — | misconfiguration | Sep 14, 13 |
| Silverberg Surgical and Medical Group | — | misconfiguration | Sep 10, 13 |
| UCSF Medical Center | — | unknown | Sep 9, 13 |
| DaVita, a division of DaVita HealthCare Partners Inc. | — | misconfiguration | Sep 6, 13 |
| Exelixis | — | unknown | Jul 30, 13 |
| Advocate Medical Group | — | — | Jul 15, 13 |
| Hankyu Chung, M.D. | — | third party | Jun 16, 13 |
| Foundations Recovery Network | — | unknown | Jun 15, 13 |
| Cogent Healthcare, Inc. | — | third party | May 5, 13 |
| Sutter Medical Foundation | — | insider | Apr 26, 13 |
| WestCoast Children's Clinic | — | misconfiguration | Apr 16, 13 |
| Sutter Health East Bay Region (Alta Bates Summit Medical Center; Sutter Delta Medical Center; Eden Medical Center) | — | unknown | Apr 15, 13 |
| Managed Med, A Psychological Corporation | — | — | Mar 1, 13 |
| Sonoma Valley Hospital | — | misconfiguration | Feb 14, 13 |
| Stanford School of Medicine & Lucile Packard Children's Hospital | — | unknown | Jan 9, 13 |
| NECA/IBEW Family Medical Care Plan | — | misconfiguration | Dec 28, 12 |
| Crescent Health Inc. - A Walgreen Company | — | — | Dec 28, 12 |
| Calif. Department of Health Care Services | — | vulnerability | Dec 10, 12 |
| Stethoscope.com LLC | — | — | Dec 3, 12 |
| Western University of Health Sciences | — | — | Nov 14, 12 |
| Thorlo | — | unknown | Nov 14, 12 |
| California Department of Healthcare Services | — | unknown | Nov 5, 12 |
| Calvin Schuster, M.D. | — | — | Nov 4, 12 |
| RR Donnelley | — | unknown | Oct 8, 12 |
| St. Therese Medical Group | — | — | Jul 22, 12 |
| Stanford Hospital & Clinics and School of Medicine | — | — | Jul 15, 12 |
| Apria Healthcare, Inc. | — | — | Jun 14, 12 |
| California Correctional Health Care Services (CCHCS) | — | unknown | Jun 11, 12 |
| Hamner Square Denta | — | misconfiguration | May 18, 12 |
| St Mary Medical Center | — | unknown | May 7, 12 |
| Desert AIDS Project | — | unknown | Apr 12, 12 |
| KAISER PERMANENTE | — | insider | Apr 6, 12 |
| Cigna Dental | — | insider | Mar 23, 12 |
| Kern Medical Center | — | — | Feb 25, 12 |
| Emory Healthcare, Inc. | — | — | Feb 20, 12 |
| Perry Dental | — | unknown | Feb 16, 12 |
| St. Joseph's Medical Center | — | unknown | Feb 2, 12 |
| Kaiser Permanente Northern CA Department of Research | — | malware | Oct 18, 11 |
| San Jose Medical Supply Company | — | insider | Aug 1, 11 |
| UnitedHealth Group health plan single affiliated covered entity | — | insider | Jun 28, 11 |
| Zocdoc, Inc. | — | vulnerability | Jun 15, 11 |
| Dominion Dental Services, Inc., Dominion National Insurance Company, and Dominion Dental Services USA, Inc. (hereinafter referred to collectively as “Dominion National”). | — | unknown | Aug 25, 10 |
| Kaiser Permanente Northern California | — | insider | Jun 6, 10 |