HHS OCR report ยท 2021
Crystal Lake Clinic PC data breach
Crystal Lake Clinic PC, a healthcare provider in Michigan, reported a breach affecting 37,331 individuals to HHS OCR on Apr 9, 2021.
OCR report facts
- Covered entity
- Crystal Lake Clinic PC
- Entity type
- Healthcare Provider
- State
- Michigan
- Individuals affected
- 37,331
- Submission date
- Apr 9, 2021
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- No
- Status
- Archive (closed)
Frequently asked questions
How many people were affected by the Crystal Lake Clinic PC data breach?
The report to HHS OCR lists 37,331 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Apr 9, 2021.
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?
No. The report is in the OCR portal archive, which holds reports where OCR has closed its review.
Is a breach notice letter from Crystal Lake Clinic PC 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 Crystal Lake Clinic PC.