HHS OCR report ยท 2026
University of Michigan/Michigan Medicine data breach
University of Michigan/Michigan Medicine, a healthcare provider in Michigan, reported a breach affecting 551 individuals to HHS OCR on May 1, 2026.
OCR report facts
- Covered entity
- University of Michigan/Michigan Medicine
- Entity type
- Healthcare Provider
- State
- Michigan
- Individuals affected
- 551
- Submission date
- May 1, 2026
- Type of breach
- Unauthorized Access/Disclosure
- Location of breached information
- Electronic Medical Record
- Business associate present
- No
- Status
- Under investigation
Other reports by University of Michigan/Michigan Medicine
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| University of Michigan/Michigan Medicine | MI | Healthcare Provider | 1,015 | Aug 13, 2025 | Unauthorized Access/Disclosure | Archive (closed) |
| University of Michigan/Michigan Medicine | MI | Healthcare Provider | 57,891 | Sep 26, 2024 | Hacking/IT Incident | Archive (closed) |
| University of Michigan/Michigan Medicine | MI | Healthcare Provider | 56,953 | Jul 19, 2024 | Hacking/IT Incident | Archive (closed) |
| University of Michigan/Michigan Medicine | MI | Healthcare Provider | 33,857 | Oct 25, 2022 | Hacking/IT Incident | Archive (closed) |
| University of Michigan/Michigan Medicine | MI | Healthcare Provider | 2,921 | Mar 3, 2022 | Hacking/IT Incident | Archive (closed) |
| University of Michigan/Michigan Medicine | MI | Healthcare Provider | 1,062 | Oct 16, 2020 | Unauthorized Access/Disclosure | Archive (closed) |
| University of Michigan/Michigan Medicine | MI | Healthcare Provider | 5,466 | Aug 16, 2019 | Hacking/IT Incident | Archive (closed) |
| University of Michigan/Michigan Medicine | MI | Healthcare Provider | 3,624 | Sep 28, 2018 | Unauthorized Access/Disclosure | Archive (closed) |
| University of Michigan/Michigan Medicine | MI | Healthcare Provider | 871 | Jun 25, 2018 | Theft | Archive (closed) |
Frequently asked questions
How many people were affected by the University of Michigan/Michigan Medicine data breach?
The report to HHS OCR lists 551 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on May 1, 2026.
What type of breach was it?
The OCR portal lists the type of breach as Unauthorized Access/Disclosure, with the breached information located in: Electronic Medical Record.
Is the investigation still open?
Yes. The OCR portal lists this report as under investigation.
Is a breach notice letter from University of Michigan/Michigan Medicine legitimate?
This site cannot verify letters. Check the sender against the organisation's official website and the HHS OCR breach portal, and avoid calling numbers or clicking links only listed in an unexpected message. See our guide on what to do after a data breach notice.
Source: HHS OCR Breach Portal, OCR export October 2026. Network USA is not affiliated with HHS or University of Michigan/Michigan Medicine.