Regulator-posted notice

Breach notice filed by Kaiser Foundation Health Plan, Inc. (April 2024)

Organization named: Kaiser Foundation Health Plan, Inc. Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Unauthorized Access/Disclosure

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 12, 2024.

Organization as reported: Kaiser Foundation Health Plan, Inc., CA
Entity type as reported: Health Plan
Category as reported: Unauthorized Access/Disclosure
Location of information as reported: Network Server
Submission date: April 12, 2024
Observed by BreachRecords: 2026-10-18 16:15 UTC (revision 9978, row:1117)
Archived copy: Held in the private archive (provenance)

The covered entity (CE), Kaiser Foundation Health Plan, Inc., reported that it disclosed the protected health information (PHI) for up to 13,134,908 individuals while using third-party tracking technologies. The PHI involved clinical, demographic, and financial information. The CE notified HHS, affected individuals, and the media. In response to the breach, the CE: removed all third-party tracking technologies from its authenticated online platforms, trained or retrained workforce members, and implemented additional administrative safeguards.
The source's own words, from the revision above.

Figures, per source

13,400,000 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date April 12, 2024, 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.

2024-04-12Submission date (HHS Office for Civil Rights breach portal)
2026-10-18Observed by BreachRecords (revision 9978)
2026-10-19Approved by a reviewer

Organizations linked by a reviewer

Kaiser Foundation Health Plan, Inc. Named as the covered entity Provisional: identity as filed, not yet matched to the directory Linked 2026-10-19, method provisional.

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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