HHS OCR report · 2019
West Hills Hospital & Medical Center data breach
OCR report facts
- Covered entity
- West Hills Hospital & Medical Center
- Entity type
- Healthcare Provider
- State
- California
- Individuals affected
- 10,650
- Submission date
- Aug 6, 2019
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
On June 12, 2019, a business associate (BA), United WestLabs, Inc., notified the covered entity (CE), that its subcontractor, American Medical Collection Agency, experienced a security incident between August 1, 2018 and March 30, 2019, when an unauthorized user gained access to the subcontractor’s computer server. The incident affected individuals across several different CEs including West Hills Hospital & Medical Center. The types of electronic protected health information (ePHI) involved ...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the West Hills Hospital & Medical Center data breach?
The report to HHS OCR lists 10,650 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Aug 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: 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 West Hills Hospital & Medical Center 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 West Hills Hospital & Medical Center.