HHS OCR report ยท 2025
Blue Shield of California data breach
OCR report facts
- Covered entity
- Blue Shield of California
- Entity type
- Business Associate
- State
- California
- Individuals affected
- 4,700,000
- Submission date
- Apr 9, 2025
- Type of breach
- Unauthorized Access/Disclosure
- Location of breached information
- Network Server
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
The business associate (BA), Blue Shield of California, reported that Google analytics was configured on its website in such a way that protected health information (PHI) may have been transmitted to Google. This potentially affected 4,700,000 individuals. The PHI involved included clinical, demographic, and financial information. The BA notified HHS, the affected individuals, the media, and provided substitute notice on its website. In response to the breach, the BA implemented additional ad...
Text as published on the HHS OCR breach portal.
Other reports by Blue Shield of California
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| Blue Shield of California | CA | Health Plan | 93,921 | Sep 29, 2025 | Unauthorized Access/Disclosure | Archive (closed) |
| Blue Shield of California | CA | Business Associate | 607 | Sep 29, 2025 | Unauthorized Access/Disclosure | Archive (closed) |
| Blue Shield of California | CA | Health Plan | 783 | Jul 21, 2025 | Unauthorized Access/Disclosure | Archive (closed) |
| Blue Shield of California | CA | Business Associate | 673 | Jun 23, 2025 | Unauthorized Access/Disclosure | Under investigation |
| Blue Shield of California | CA | Business Associate | 1,543 | Jun 6, 2025 | Unauthorized Access/Disclosure | Under investigation |
| Blue Shield of California | CA | Health Plan | 624 | Feb 28, 2025 | Unauthorized Access/Disclosure | Archive (closed) |
| Blue Shield of California | CA | Health Plan | 1,506 | Jul 12, 2022 | Hacking/IT Incident | Archive (closed) |
| Blue Shield of California | CA | Health Plan | 1,519 | Nov 19, 2021 | Hacking/IT Incident | Archive (closed) |
| Blue Shield of California | CA | Health Plan | 20,764 | Jan 14, 2016 | Unauthorized Access/Disclosure | Archive (closed) |
Frequently asked questions
How many people were affected by the Blue Shield of California data breach?
The report to HHS OCR lists 4,700,000 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Apr 9, 2025.
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 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 Blue Shield of California.