HHS OCR report ยท 2025
McLaren Health Care data breach
McLaren Health Care, a healthcare provider in Michigan, reported a breach affecting 743,131 individuals to HHS OCR on Jun 24, 2025.
OCR report facts
- Covered entity
- McLaren Health Care
- Entity type
- Healthcare Provider
- State
- Michigan
- Individuals affected
- 743,131
- Submission date
- Jun 24, 2025
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- No
- Status
- Under investigation
Other reports by McLaren Health Care
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| McLaren Health Care | MI | Healthcare Provider | 2,103,881 | Oct 20, 2023 | Hacking/IT Incident | Archive (closed) |
Frequently asked questions
How many people were affected by the McLaren Health Care data breach?
The report to HHS OCR lists 743,131 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Jun 24, 2025.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Network Server.
Is the investigation still open?
Yes. The OCR portal lists this report as under investigation.
Is a breach notice letter from McLaren Health Care 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 McLaren Health Care.