HHS OCR report · 2012
Chicago Muscoskeletal Institute data breach
OCR report facts
- Covered entity
- Chicago Muscoskeletal Institute
- Entity type
- Healthcare Provider
- State
- Illinois
- Individuals affected
- 750
- Submission date
- Mar 23, 2012
- Type of breach
- Unauthorized Access/Disclosure
- Location of breached information
- Network Server
- Business associate present
- No
- Status
- Archive (closed)
OCR description
On December 31, 2011, the names, dates of birth, medical record numbers, and clinic notes for 750 of the covered entity’s (CE) patients were available on its network server and website. The CE disabled the website and removed the 750 patients’ demographic and clinical information from its network server. The CE provided breach notification to HHS, affected individuals, and the media. As a result of OCR’s investigation, the CE provided fraud and credit monitoring to affected individuals and...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Chicago Muscoskeletal Institute data breach?
The report to HHS OCR lists 750 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Mar 23, 2012.
What type of breach was it?
The OCR portal lists the type of breach as Unauthorized Access/Disclosure, 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 Chicago Muscoskeletal Institute 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 Chicago Muscoskeletal Institute.