HHS OCR report ยท 2025
Mojave Radiation Oncology Medical Group data breach
OCR report facts
- Covered entity
- Mojave Radiation Oncology Medical Group
- Entity type
- Healthcare Provider
- State
- California
- Individuals affected
- 4,403
- 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), Mojave Radiation Oncology Medical Group, reported that an employee of its business associate (BA) was the target of an email phishing scheme that compromised the protected health information (PHI) of 4,403 individuals. The PHI involved included clinical, demographic, and financial information. The CE notified HHS, the affected individuals, the media, and provided substitute notice. In response to the breach, the CE provided complimentary credit monitoring services to...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Mojave Radiation Oncology Medical Group data breach?
The report to HHS OCR lists 4,403 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 Mojave Radiation Oncology 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 Mojave Radiation Oncology Medical Group.