Health Data Breach Tracker/Monthly roundup

Biggest health data breaches: April 2024

In April 2024, 65 health data breaches affecting 500 or more people were reported to the HHS Office for Civil Rights, with a combined 17,868,179 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

65

Individuals affected

17,868,179

Hacking or IT incidents

55

  1. 1Kaiser Foundation Health Plan, Inc.CA · Health Plan · Unauthorized Access/Disclosure · Apr 12, 202413,400,000
  2. 2NorthBay Healthcare CorporationCA · Healthcare Provider · Hacking/IT Incident · Apr 23, 2024569,012
  3. 3Group Health Cooperative of South Central WisconsinWI · Health Plan · Hacking/IT Incident · Apr 8, 2024533,809
  4. 4Kootenai HealthID · Healthcare Provider · Hacking/IT Incident · Apr 24, 2024464,088
  5. 5Rebound Orthopedics & NeurosurgeryWA · Healthcare Provider · Hacking/IT Incident · Apr 10, 2024426,536
  6. 6Continuum Health Alliance, LLCNJ · Business Associate · Hacking/IT Incident · Apr 1, 2024377,119
  7. 7Otolaryngology Associates, LLCIN · Healthcare Provider · Hacking/IT Incident · Apr 1, 2024316,802
  8. 8County of Los Angeles Departments of Health Services and Public HealthCA · Healthcare Provider · Hacking/IT Incident · Apr 25, 2024252,856
  9. 9Knowles Smith & Associates, d/b/a Village Family DentalNC · Healthcare Provider · Hacking/IT Incident · Apr 8, 2024240,214
  10. 10OrthoConnecticut PLLCCT · Healthcare Provider · Hacking/IT Incident · Apr 26, 2024178,742
  11. 11South Texas Oncology and Hematology, PLLCTX · Healthcare Provider · Hacking/IT Incident · Apr 19, 2024175,195
  12. 12LivaNova USA, Inc.TX · Business Associate · Hacking/IT Incident · Apr 26, 2024129,031
  13. 13Inland Physicians Billing ServicesCA · Healthcare Clearing House · Hacking/IT Incident · Apr 27, 202477,434
  14. 14Bluebonnet Trails Community ServicesTX · Healthcare Provider · Hacking/IT Incident · Apr 22, 202476,165
  15. 15Gaia Software, LLCCO · Business Associate · Hacking/IT Incident · Apr 5, 202456,676
  16. 16Tobin, Carberry, O'Malley, Riley & Selinger, P.C.CT · Business Associate · Hacking/IT Incident · Apr 17, 202447,106
  17. 17Medical Billing Specialists, Inc.MA · Business Associate · Hacking/IT Incident · Apr 24, 202443,673
  18. 18Empath-Stratum Inc. doing business as Empath HealthFL · Healthcare Provider · Hacking/IT Incident · Apr 25, 202440,569
  19. 19Bridgeway Center, Inc.FL · Healthcare Provider · Hacking/IT Incident · Apr 19, 202436,353
  20. 20The Prudential Insurance Company of AmericaNJ · Health Plan · Hacking/IT Incident · Apr 22, 202436,075