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47 disclosed this week · 26,367 on record

McLaren Health Care

Disclosed Jul 16, 202164,600 affectedConfirmed

Official notice

The covered entity (CE), McLaren Health Care Corporation, reported that its business associate experienced a ransomware attack that affected the electronic protected health information (ePHI) of 64,600 individuals. The ePHI involved included names, addresses, dates of birth, drivers’ license numbers, Social Security numbers, diagnoses, clinical information, and other treatment information. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. In response to the breach, the BA strengthened its administrative and technical safeguards to better protect ePHI.

What is known

People affected64,600 (as reported to HHS)
DisclosedJul 16, 2021
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

Other breaches at McLaren Health Care

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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