Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

TriWest Healthcare Alliance

Disclosed Mar 1, 20114,500 affectedConfirmed

Official notice

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What is known

People affected4,500 (as reported to HHS)
DisclosedMar 1, 2011
AttackInsider
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Official noticeocrportal.hhs.gov
HHS OCR breach report (archive, resolved): TriWest Healthcare Alliance (Business Associate, AZ)

Notices filed

TotalMar 1, 2011
HHS archive4,500 people

Other breaches at TriWest Healthcare Alliance

Breach, details not statedExposed health records, insurance details and names. Reported to the California AG.12K affectedHealthcareUSJul 2
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.

Everything about TriWest Healthcare Alliance