HHS OCR report · 2021
California Physicians' Services d/b/a Blue Shield of California data breach
OCR report facts
- Covered entity
- California Physicians' Services d/b/a Blue Shield of California
- Entity type
- Health Plan
- State
- California
- Individuals affected
- 2,841
- Submission date
- Oct 27, 2021
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
California Physicians’ Services dba Blue Shield of California, a covered entity (CE), reported that its business associate (BA) experienced a ransomware attack that compromised the electronic protected health information (ePHI) of 2,841 individuals. The ePHI involved included names, addresses, dates of birth, and health insurance information. The BA notified law enforcement; the CE notified HHS, affected individuals, the media, and provided substitute notice.
Text as published on the HHS OCR breach portal.
Other reports by California Physicians' Services d/b/a Blue Shield of California
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| California Physicians' Services d/b/a Blue Shield of California | CA | Business Associate | 61,788 | Apr 4, 2023 | Hacking/IT Incident | Archive (closed) |
Frequently asked questions
How many people were affected by the California Physicians' Services d/b/a Blue Shield of California data breach?
The report to HHS OCR lists 2,841 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Oct 27, 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 California Physicians' Services d/b/a Blue Shield of California 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 California Physicians' Services d/b/a Blue Shield of California.