HHS OCR report ยท 2021
John Muir Physician Network data breach
OCR report facts
- Covered entity
- John Muir Physician Network
- Entity type
- Healthcare Provider
- State
- California
- Individuals affected
- 1,081
- Submission date
- Jun 24, 2021
- Type of breach
- Unauthorized Access/Disclosure
- Location of breached information
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), John Muir Physician Network, reported that an employee impermissibly provided an individual with access to an Excel file that contained the electronic protected health information (ePHI) of 1,081 individuals. The ePHI involved included names, diagnoses, and health insurance and treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice on its website. In response to the breach, the CE sanctioned the responsible emplo...
Text as published on the HHS OCR breach portal.
Other reports by John Muir Physician Network
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| John Muir Physician Network | CA | Healthcare Provider | 5,450 | Apr 24, 2010 | Theft | Archive (closed) |
Frequently asked questions
How many people were affected by the John Muir Physician Network data breach?
The report to HHS OCR lists 1,081 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Jun 24, 2021.
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 John Muir Physician Network 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 John Muir Physician Network.