HHS OCR report ยท 2025
Golden State Radiation Oncology data breach
OCR report facts
- Covered entity
- Golden State Radiation Oncology
- Entity type
- Healthcare Provider
- State
- California
- Individuals affected
- 2,130
- Submission date
- Jun 27, 2025
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
The covered entity (CE), Golden State Radiation Oncology, reported that multiple employees of its business associate (BA) was the subject of an email phishing scheme that affected the protected health information (PHI) of 2,130 individuals. The PHI involved included clinical and demographic information. The CE notified HHS, affected individuals, and the media. In response to the breach, the CE provided complimentary credit monitoring services to the affected individuals and implemented additi...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Golden State Radiation Oncology data breach?
The report to HHS OCR lists 2,130 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Jun 27, 2025.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Email.
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 Golden State Radiation Oncology 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 Golden State Radiation Oncology.