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UW Medicine

Disclosed Feb 20, 20197 years ago973,024 affectedConfirmed

Official notice

The covered entity (CE), UW Medicine, reported that a configuration error in its system resulted in the protected health information (PHI) of 973,024 individuals becoming accessible on the internet. The PHI involved included names and medical record numbers. The CE notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the CE implemented additional administrative and technical safeguards and retrained workforce members on methods to better protect its PHI.

What is known

People affected973,024 (as reported to HHS)
DisclosedFeb 20, 2019
AttackHacking
Data exposedNames, Health
SectorHealthcare · US
StatusConfirmed

Sources

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

Notices filed

WhereFiledPeople
HHS archivetotalFeb 20, 2019973,024

Other breaches at UW Medicine

BreachAffected
Disclosed Jun 4, 2021Jun 4, 20215 years agoLost or stolen device18K
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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