HHS OCR report ยท 2016
County of Los Angeles Departments of Health and Mental Health data breach
OCR report facts
- Covered entity
- County of Los Angeles Departments of Health and Mental Health
- Entity type
- Healthcare Provider
- State
- California
- Individuals affected
- 749,017
- Submission date
- Dec 16, 2016
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The County of Los Angeles, Department of Health and Mental Health (LAC), the covered entity (CE), reported that employee email accounts were breached in a phishing attack that affected the electronic protected health information (ePHI) of 749,017 individuals. Local law enforcement was notified. LAC also notified all affected individuals and the media. The CE hired a third party to conduct a comprehensive HIPAA security audit. In response to the breach, LAC employed additional remediation...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the County of Los Angeles Departments of Health and Mental Health data breach?
The report to HHS OCR lists 749,017 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Dec 16, 2016.
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 County of Los Angeles Departments of Health and Mental Health 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 County of Los Angeles Departments of Health and Mental Health.