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44 disclosed this week · 26,355 on record

California Physicians' Services

Disclosed Dec 22, 202261,788 affectedConfirmed

Official notice

The covered entity (CE), California Physicians’ Services dba Blue Shield of California, reported that its business associate’s (BA) subcontractor suffered a hacking attack affecting the protected health information (PHI) of 1,553 individuals. The PHI involved included names, dates of birth, and addresses. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. In response to the breach, the CE severed its connection with the servers affected by the breach, implemented additional technical safeguards, and provided complimentary credit monitoring services to affected individuals.

What is known

People affected61,788 (as reported to HHS)
DisclosedDec 22, 2022
HappenedJan 28, 2023
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

Other breaches at California Physicians' Services

History of this record
records_basis2026-09-25
organization to hhsby backfillSource
records2026-09-25
3411 to 61788by backfillSource
attack2026-09-25
unknown to hackingby backfillSource
data_types2026-09-25
[] to ["names","health"]by backfillSource
summary2026-09-25
empty to The covered entity (CE), California Physicians’ Services dba Blue Shield of California, reported that its business associate’s (BA) subcontractor suffered a hacking attack affecting the protected health information (PHI) of 1,553 individualby backfillSource
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 3411by backfillSource
disclosed2026-09-25
2023-03-31 to 2022-12-22by backfillSource
Added2026-09-25
First recordedby backfillSource

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

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