HHS OCR report · 2023
Madera County data breach
OCR report facts
- Covered entity
- Madera County
- Entity type
- Health Plan
- State
- California
- Individuals affected
- 1,446
- Submission date
- Aug 9, 2023
- Type of breach
- Unauthorized Access/Disclosure
- Location of breached information
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE) Madera County, reported that an employee of its business associate’s (BA) vendor emailed the protected health information (PHI) of 1,446 individuals to the wrong recipient. The PHI involved included names, dates of birth, health insurance information, financial information, and other identifying information. The CE notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the vendor retrained its employees and implemented...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Madera County data breach?
The report to HHS OCR lists 1,446 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Aug 9, 2023.
What type of breach was it?
The OCR portal lists the type of breach as Unauthorized Access/Disclosure, 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 Madera County 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 Madera County.