HHS OCR report ยท 2026
Stockton Cardiology Medical Group data breach
Stockton Cardiology Medical Group, a healthcare provider in California, reported a breach affecting 90,000 individuals to HHS OCR on Mar 18, 2026.
OCR report facts
- Covered entity
- Stockton Cardiology Medical Group
- Entity type
- Healthcare Provider
- State
- California
- Individuals affected
- 90,000
- Submission date
- Mar 18, 2026
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- No
- Status
- Under investigation
Frequently asked questions
How many people were affected by the Stockton Cardiology Medical Group data breach?
The report to HHS OCR lists 90,000 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Mar 18, 2026.
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?
Yes. The OCR portal lists this report as under investigation.
Is a breach notice letter from Stockton Cardiology Medical Group 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 Stockton Cardiology Medical Group.