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Mayo Clinic

Disclosed Oct 5, 20205 years ago1,614 affectedConfirmed

Official notice

Mayo Clinic, the covered entity (CE), reported that a workforce member impermissibly accessed the protected health information (PHI) of 1,614 individuals. The PHI involved included names, addresses, dates of birth, diagnoses, lab results, medications prescribed, and other treatment information. The CE notified HHS, affected individuals, the media, local law enforcement, and the FBI. In response to the breach, the CE implemented additional technical and administrative safeguards.

What is known

People affected1,614 (as reported to HHS)
DisclosedOct 5, 2020
AttackInsider
Data exposedNames, Health
SectorHealthcare · US
StatusConfirmed

Sources

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

Notices filed

WhereFiledPeople
HHS archivetotalOct 5, 20201,614

Other breaches at Mayo Clinic

BreachAffected
Disclosed Mar 28, 2025Mar 28, 20251 year agoInsider1,869
Disclosed Nov 3, 2023Nov 3, 20232 years agoInsider1,152
Disclosed Mar 22, 2019Mar 22, 20197 years agoInsider1,902
Disclosed Sep 8, 2010Sep 8, 201016 years agoLost or stolen device1,740
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.

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