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Regulator-posted notice

Breach notice filed by Health Center Partners of Southern California (April 2021)

Organization named: Health Center Partners of Southern California Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Hacking/IT Incident

What the sources say

HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) Primary notice

Posted on the HHS Office for Civil Rights breach portal with a submission date of April 9, 2021.

Organization as reported
Health Center Partners of Southern California, CA
Entity type as reported
Business Associate
Category as reported
Hacking/IT Incident
Location of information as reported
Network Server
Submission date
April 9, 2021
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 12232, row:3371)
Archived copy
Held in the private archive (provenance)

The business associate (BA), Health Center Partners of Southern California, reported that its vendor experienced a ransomware attack that affected the electronic protected health information (ePHI) of 337,245 individuals. The ePHI involved included names, diagnoses, Social Security numbers, medications prescribed, financial and health insurance information, and other treatment information. The BA notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the BA implemented additional administrative, technical, and security safeguards to better protect ePHI.

The source's own words, from the revision above.

Figures, per source

  • 337,245 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date April 9, 2021, revision observed 2026-10-18.

Each figure is one source's figure with the basis that source gave. Figures from different sources are shown side by side and are not added, averaged or chosen between.

Timeline

Source dates are the dates the sources give. Observation dates are when BreachRecords recorded each revision.

  • Submission date (HHS Office for Civil Rights breach portal)
  • Observed by BreachRecords (revision 12232)
  • Approved by a reviewer

Organizations linked by a reviewer

Archived evidence

  • 3dbc27dd5742e041cc1e7fe18cc669e2901fbd3b86b7007ed27948ff4d406e1f
    text/csv, 5,530,996 bytes, retrieved from HHS Office for Civil Rights breach portal, 2026-10-18 16:15 UTC. Archived privately · Provenance · Source page

Records reflect source filings as of the dates shown. BreachRecords is not a regulator.

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