HHS OCR report ยท 2023
Western Washington Medical Group data breach
OCR report facts
- Covered entity
- Western Washington Medical Group
- Entity type
- Healthcare Provider
- State
- Mississippi
- Individuals affected
- 350,863
- Submission date
- Oct 26, 2023
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), Western Washington Medical Group, reported that it was the subject of a ransomware attack that affected the protected health information (PHI) of 350,863 individuals. The PHI involved included names, addresses, Social Security numbers, dates of birth, claims information, and diagnoses. 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 and impleme...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Western Washington Medical Group data breach?
The report to HHS OCR lists 350,863 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Oct 26, 2023.
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 Western Washington 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 Western Washington Medical Group.