The HealthTech Signal

Health Data Breach Tracker/Monthly roundup

Biggest health data breaches: March 2026

In March 2026, 79 health data breaches affecting 500 or more people were reported to the HHS Office for Civil Rights, with a combined 8,997,043 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

79

Individuals affected

8,997,043

Hacking or IT incidents

74

  1. 1Nacogdoches Memorial Hospital nTX · Healthcare Provider · Hacking/IT Incident · Mar 30, 20262,507,073
  2. 2Navia Benefit Solutions, Inc.WA · Business Associate · Hacking/IT Incident · Mar 18, 20262,151,330
  3. 3New York City Health and Hospitals CorporationNY · Healthcare Provider · Hacking/IT Incident · Mar 24, 20261,800,000
  4. 4OpenLoop Health, Inc.IA · Business Associate · Hacking/IT Incident · Mar 17, 2026716,000
  5. 5Erie Family Health CentersIL · Healthcare Provider · Hacking/IT Incident · Mar 27, 2026570,000
  6. 6North Texas Behavioral Health AuthorityTX · Healthcare Provider · Hacking/IT Incident · Mar 6, 2026285,086
  7. 7Saint Anthony HospitalIL · Healthcare Provider · Hacking/IT Incident · Mar 6, 2026146,108
  8. 8Coastal Carolina Health Care, PANC · Healthcare Provider · Hacking/IT Incident · Mar 24, 2026110,304
  9. 9Defense Health AgencyVA · Health Plan · Hacking/IT Incident · Mar 12, 202696,271
  10. 10Stockton Cardiology Medical GroupCA · Healthcare Provider · Hacking/IT Incident · Mar 18, 202690,000
  11. 11Exclusive Physicians PLLCMI · Healthcare Provider · Hacking/IT Incident · Mar 6, 202658,000
  12. 12Proxycare, Inc.FL · Healthcare Provider · Hacking/IT Incident · Mar 27, 202645,196
  13. 13Penobscot Valley HospitalME · Healthcare Provider · Hacking/IT Incident · Mar 28, 202633,107
  14. 14Modoc Medical CenterCA · Healthcare Provider · Hacking/IT Incident · Mar 27, 202629,688
  15. 15Clarinda Regional Health CenterIA · Healthcare Provider · Hacking/IT Incident · Mar 25, 202624,341
  16. 16CORPORACION DE SERVICIOS MEDICOS PRIMARIOS Y PREVENCION DE HATILLOHealthcare Provider · Hacking/IT Incident · Mar 26, 202624,236
  17. 17Pennyroyal Healthcare ServicesKY · Healthcare Provider · Hacking/IT Incident · Mar 23, 202624,122
  18. 18MedPeds Associates of SarasotaFL · Healthcare Provider · Hacking/IT Incident · Mar 13, 202622,017
  19. 19Barrio Comprehensive Family Health Care CenterTX · Healthcare Provider · Hacking/IT Incident · Mar 6, 202619,971
  20. 20East Carolina Anesthesia AssociatesNC · Healthcare Provider · Hacking/IT Incident · Mar 12, 202619,408
February 2026April 2026All breachesHHS OCR Breach Portal