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44 disclosed this week · 26,355 on record

John Muir Physician Network

Disclosed Jun 24, 20211,081 affectedConfirmed

Official notice

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 affected1,081 (as reported to HHS)
DisclosedJun 24, 2021
AttackInsider
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

Other breaches at John Muir Physician Network

History of this record
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.

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