HHS OCR report ยท 2022
University of Michigan/Michigan Medicine data breach
OCR report facts
- Covered entity
- University of Michigan/Michigan Medicine
- Entity type
- Healthcare Provider
- State
- Michigan
- Individuals affected
- 2,921
- Submission date
- Mar 3, 2022
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- No
- Status
- Archive (closed)
OCR description
University of Michigan/Michigan Medicine, the covered entity (CE), reported that an employee was the subject of an email phishing scheme affecting 2,921 individuals. The protected health information (PHI) involved included names, addresses, dates of birth, diagnoses, lab results, and medications. The CE notified HHS, affected individuals, the media, and provided substitute notice. In its mitigation efforts, the CE strengthened its administrative and technical safeguards. Staff were retraine...
Text as published on the HHS OCR breach portal.
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 | 551 | May 1, 2026 | Unauthorized Access/Disclosure | Under investigation |
| 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 | 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 2,921 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Mar 3, 2022.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Email.
Is the investigation still open?
No. The report is in the OCR portal archive, which holds reports where OCR has closed its review.
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.