John Muir Physician Network
Disclosed Jun 24, 20211,081 affectedConfirmed
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 employee and implemented additional administrative and technical safeguards to protect its sensitive data.
What is known
| People affected | 1,081 (as reported to HHS) |
|---|---|
| Disclosed | Jun 24, 2021 |
| Attack | Insider |
| Data exposed | NamesHealth |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
Notices filed
Other breaches at John Muir Physician Network
History of this record
First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.