- State
- MI
- Covered entity type
- Healthcare Provider
- Individuals affected
- 51,040
- Business associate present
- No
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- First seen by InfoSec Signals
- 9/23/2026
- Last seen in OCR export
- 9/23/2026
OCR description
The covered entity (CE), McKenzie Memorial Hospital dba McKenzie Health System, reported that it experienced a cyber-attack affecting the protected health information (PHI) of 51,040 individuals. The PHI involved included names, addresses, dates of birth, Social Security and drivers’ license numbers, claims information, diagnoses, medications, medical record numbers, patient account numbers, and health insurance and other treatment information. The CE notified HHS, affected individuals, and the media. Following the breach, the CE offered complimentary credit monitoring and identity theft protection services and implemented additional administrative, technical, and security safeguards. OCR provided technical assistance regarding the HIPAA Rules.
Change history
- 9/23/2026Added to OCR's archive list
Source: U.S. Department of Health and Human Services, Office for Civil Rights, Breach Portal. Records are reproduced as published; entity names and figures are OCR's.