HHS OCR report ยท 2011
Contra Costa Health Services data breach
Contra Costa Health Services, a healthcare provider in California, reported a breach affecting 4,700 individuals to HHS OCR on Dec 7, 2011.
OCR report facts
- Covered entity
- Contra Costa Health Services
- Entity type
- Healthcare Provider
- State
- California
- Individuals affected
- 4,700
- Submission date
- Dec 7, 2011
- Type of breach
- Unauthorized Access/Disclosure
- Location of breached information
- Paper/Films
- Business associate present
- No
- Status
- Archive (closed)
Frequently asked questions
How many people were affected by the Contra Costa Health Services data breach?
The report to HHS OCR lists 4,700 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Dec 7, 2011.
What type of breach was it?
The OCR portal lists the type of breach as Unauthorized Access/Disclosure, with the breached information located in: Paper/Films.
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 Contra Costa Health Services 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 Contra Costa Health Services.