Proliance Surgeons

Disclosed Nov 20, 2023437,392 affectedConfirmed

The covered entity (CE), Proliance Surgeons, reported that it experienced a ransomware incident that affected the protected health information (PHI) of 437,392 individuals. The PHI involved included names, dates of birth, addresses, drivers’ license and Social Security numbers, financial information, and diagnoses. The CE notified HHS, the affected individuals, the media, and posted substitute notice on its website. In response to the breach, the CE provided complimentary credit monitoring services and implemented additional administrative and technical safeguards to better protect PHI.

What is known

People affected	437,392 (as reported to HHS)
Disclosed	Nov 20, 2023
Discovered	Feb 11, 2023
Happened	Feb 11, 2023
Attack	Ransomware
Data exposed	NamesHealth
Sector	Healthcare · US
Status	Confirmed

Sources

Official noticeatg.wa.gov

Washington Attorney General breach notice: Proliance Surgeons

Official noticeocrportal.hhs.gov

HHS OCR breach report (archive, resolved): Proliance Surgeons (Healthcare Provider, WA)

Notices filed

Residents of WANov 20, 2023

Washington AG329,291 people

TotalNov 20, 2023

HHS archive437,392 people

History of this record

data_types2026-09-25

[] to ["names","health"]by backfillSource

records_basis2026-09-25

empty to hhsby backfillSource

records2026-09-25

empty to 437392by backfillSource

summary2026-09-25

empty to The covered entity (CE), Proliance Surgeons, reported that it experienced a ransomware incident that affected the protected health information (PHI) of 437,392 individuals. The PHI involved included names, dates of birth, addresses, driversby backfillSource

Added2026-09-25

First recordedby backfillSource

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

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