HHS OCR report ยท 2019
Adventist Health Simi Valley data breach
OCR report facts
- Covered entity
- Adventist Health Simi Valley
- Entity type
- Healthcare Provider
- State
- California
- Individuals affected
- 54,708
- Submission date
- Dec 6, 2019
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), Adventist Health Simi Valley, reported that an employee was the victim of an email phishing attack that compromised the protected health information (PHI) of 54,708 individuals. The PHI involved included names, addresses, dates of birth, health insurance information, and other treatment information. The CE notified HHS, affected individuals, and the media. In its mitigation efforts, the CE provided complimentary credit monitoring services and implemented additional te...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Adventist Health Simi Valley data breach?
The report to HHS OCR lists 54,708 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Dec 6, 2019.
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 Adventist Health Simi Valley 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 Adventist Health Simi Valley.