MidMichigan Health Services
Disclosed May 7, 20215 years ago2,800 affectedConfirmed
The covered entity (CE), MidMichigan Health Services, reported that its business associate experienced a ransomware attack affecting the electronic protected health information (ePHI) of approximately 2,800 individuals. The ePHI involved included names, addresses, dates of birth, and treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice.
What is known
| People affected | 2,800 (as reported to HHS) |
|---|---|
| Disclosed | May 7, 2021 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| HHS OCR breach report (archive, resolved): MidMichigan Health Services (Healthcare Provider, MI)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| HHS archivetotal | May 7, 2021 | 2,800 |
History of this record
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.