HHS OCR report ยท 2020
Sonoma Valley Healthcare District data breach
OCR report facts
- Covered entity
- Sonoma Valley Healthcare District
- Entity type
- Healthcare Provider
- State
- California
- Individuals affected
- 69,000
- Submission date
- Dec 9, 2020
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), Sonoma Valley Healthcare District, reported that it was the subject of a ransomware attack that affected the protected health information (PHI) of 69,000 individuals. The PHI involved included names, dates of birth, addresses, claims information, diagnoses, lab results, and other treatment data. The CE notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the CE implemented additional administrative, technical, and s...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Sonoma Valley Healthcare District data breach?
The report to HHS OCR lists 69,000 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Dec 9, 2020.
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 Sonoma Valley Healthcare District 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 Sonoma Valley Healthcare District.