Contra Costa Health Services
Disclosed Dec 7, 201114 years ago4,700 affectedConfirmed
What is known
| People affected | 4,700 (as reported to HHS) |
|---|---|
| Disclosed | Dec 7, 2011 |
| Attack | Insider |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| HHS OCR breach report (archive, resolved): Contra Costa Health Services (Healthcare Provider, CA)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| HHS archivetotal | Dec 7, 2011 | 4,700 |
History of this record
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.