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Munson Healthcare

Disclosed Sep 17, 20251 year ago1,186 affectedConfirmed

Official notice

The covered entity (CE), Munson Healthcare, reported that an employee mailed the protected health information (PHI) of 1,186 individuals to the wrong recipients. The PHI involved included clinical and financial information. The CE notified HHS, the affected individuals, and the media. In response to the breach, the CE implemented additional administrative, technical, and security safeguards, and retrained workforce members to better protect its PHI.

What is known

People affected1,186 (as reported to HHS)
DisclosedSep 17, 2025
AttackInsider
Data exposedNames, Health
SectorHealthcare · US
StatusConfirmed

Sources

Source
HHS OCR breach report (archive, resolved): Munson Healthcare (Healthcare Provider, MI)ocrportal.hhs.gov · Official notice

Notices filed

WhereFiledPeople
HHS archivetotalSep 17, 20251,186

Other breaches at Munson Healthcare

BreachAffected
Disclosed Feb 26, 2020Feb 26, 20206 years agoHacking75K
History of this record
  • 2026-09-25 · added · backfill source

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

Everything about Munson Healthcare

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