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44 disclosed this week · 26,355 on record

Centrelake Medical Group

Disclosed Apr 16, 2019197,661 affectedConfirmed

Official notice

Centrelake Medical Group, Inc., a business associate (BA), reported that it was the victim of cyber-attack involving ransomware that affected the protected health information (PHI) of 197,661 individuals. The PHI involved included names, addresses, phone numbers, drivers’ license information, Social Security numbers, claims information, diagnoses/conditions, and treatment information. The BA notified HHS, affected covered entities, affected individuals, the media, and provided substitute notice. The BA also provided complimentary credit monitoring and identity restoration services to affected individuals. In its mitigation efforts, the BA implemented additional administrative, technical, and security safeguards to better protect its PHI. During the investigation, OCR provided the BA with technical assistance regarding its security management process.

What is known

People affected197,661 (as reported by the organization)
DisclosedApr 16, 2019
DiscoveredFeb 19, 2019
HappenedJan 9, 2019
AttackHacking
Data exposedNamesSocial Security numbersGovernment IDsHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
attack2026-09-25
unknown to hackingby backfillSource
data_types2026-09-25
["names","ssn","government-id"] to ["names","ssn","government-id","health"]by backfillSource
summary2026-09-25
empty to Centrelake Medical Group, Inc., a business associate (BA), reported that it was the victim of cyber-attack involving ransomware that affected the protected health information (PHI) of 197,661 individuals. The PHI involved included names, adby backfillSource
data_types2026-09-25
[] to ["names","ssn","government-id"]by backfillSource
discovered2026-09-25
empty to 2019-02-19by backfillSource
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 197661by 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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