Health Data Breach Tracker/Monthly roundup
Biggest health data breaches: September 2023
In September 2023, 56 health data breaches affecting 500 or more people were reported to the HHS Office for Civil Rights, with a combined 20,301,855 individuals affected as reported. Hacking/IT Incident was the most common breach type this month, and healthcare provider accounted for the most reports. Counts are as reported to OCR and may overlap across breaches; a listing does not imply wrongdoing.
Breaches reported
56
Individuals affected
20,301,855
Hacking or IT incidents
48
- 1Delta Dental of CaliforniaCA · Health Plan · Hacking/IT Incident · Sep 5, 20237,056,189
- 2Navvis & Company, LLCMO · Business Associate · Hacking/IT Incident · Sep 22, 20232,824,726
- 3Arietis Health, LLCFL · Business Associate · Hacking/IT Incident · Sep 29, 20231,975,066
- 4Prospect Medical Holdings, Inc.CA · Business Associate · Hacking/IT Incident · Sep 29, 20231,309,096
- 5Cook County Health and Hospitals SystemIL · Healthcare Provider · Hacking/IT Incident · Sep 24, 20231,248,546
- 6Virginia Department of Medical Assistance ServicesVA · Health Plan · Hacking/IT Incident · Sep 18, 20231,229,333
- 7Nuance Communications, Inc.MA · Business Associate · Hacking/IT Incident · Sep 15, 20231,225,054
- 8International Business Machines CorporationNY · Business Associate · Unauthorized Access/Disclosure · Sep 29, 2023630,755
- 9Temple University Health System,Inc.PA · Healthcare Provider · Hacking/IT Incident · Sep 15, 2023431,563
- 10United Healthcare Services, Inc. Single Affiliated Covered EntityCT · Health Plan · Unauthorized Access/Disclosure · Sep 7, 2023315,915
- 11Oak Valley Hospital DistrictCA · Healthcare Provider · Hacking/IT Incident · Sep 15, 2023284,629
- 12South Florida Behavioral Health Network dba Thriving Mind South FloridaFL · Business Associate · Hacking/IT Incident · Sep 29, 2023258,126
- 13Bienville Orthopaedic Specialists LLCMS · Healthcare Provider · Hacking/IT Incident · Sep 5, 2023242,986
- 14AmeritaKS · Healthcare Provider · Hacking/IT Incident · Sep 5, 2023219,707
- 15Community First Medical CenterIL · Healthcare Provider · Hacking/IT Incident · Sep 26, 2023216,047
- 16OrthoAlaska, LLCAK · Healthcare Provider · Hacking/IT Incident · Sep 22, 2023176,203
- 17Greater Dallas Healthcare EnterprisesTX · Healthcare Provider · Hacking/IT Incident · Sep 29, 2023143,833
- 18Acadia Health, LLC d/b/a Just Kids DentalAL · Healthcare Provider · Hacking/IT Incident · Sep 27, 2023129,463
- 19Valley Mountain Regional CenterCA · Business Associate · Hacking/IT Incident · Sep 29, 2023126,679
- 20Georgia Northside Ear, Nose, and Throat, LLC.TX · Healthcare Provider · Hacking/IT Incident · Sep 29, 202337,774