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BreachRecord

Kaiser Foundation Health Plan, Inc. Data Breach (April 2024): What Was Exposed and What To Do

Last updated Oct 20, 2026 · Based on 2 official filings · See sources

According to the breach report filed with the U.S. Department of Health and Human Services, Office for Civil Rights on Apr 12, 2024, Kaiser Foundation Health Plan, Inc. reported a data breach. It was also reported to the California Attorney General. People affected: 13,400,000 people (official total in the U.S. Department of Health and Human Services, Office for Civil Rights filing, filed Apr 12, 2024).

Key facts

From 2 official filings
Organization
Kaiser Foundation Health Plan, Inc.
Source: U.S. Department of Health and Human Services, Office for Civil Rights, filed Apr 12, 2024
People affected
13,400,000
Official total in the U.S. Department of Health and Human Services, Office for Civil Rights filing, filed Apr 12, 2024
Source: U.S. Department of Health and Human Services, Office for Civil Rights, filed Apr 12, 2024
Incident dates
Not stated
Notice dates
First filed Apr 12, 2024
Source: U.S. Department of Health and Human Services, Office for Civil Rights, filed Apr 12, 2024
Information exposed
  • Medical information
Source: HHS, Apr 12, 2024
Filed with
Free credit monitoring
No offer is stated in the filings we have. Check your letter.

What to do now

Steps chosen from the information listed in the official filings. Your own letter may list more.

  1. Check the Explanation of Benefits (EOB) statements from your insurer for visits, prescriptions or claims you do not recognize, and contact your insurer about anything unfamiliar.

  2. Scammers often contact people after a breach, pretending to be the organization, a bank or a government agency. Do not give your Social Security number, passwords or codes to anyone who contacts you first.

  3. You can get free credit reports from all three bureaus at AnnualCreditReport.com, the official site.

  4. The Federal Trade Commission's IdentityTheft.gov gives you a personal recovery plan.

Is the letter real?

Letters usually list a phone number for questions. We could not find an official copy of the letter, so check that the organization named in your letter appears in the official filings listed below before you call.

Never give your Social Security number, bank details or passwords to someone who contacts you first.

Timeline

  1. Reported to HHS and California AG source

Sources

  1. U.S. Department of Health and Human Services, Office for Civil Rights Breach report filed Apr 12, 2024
    Filed as “Kaiser Foundation Health Plan, Inc.” · total 13,400,000
    The link opens the agency's list; search it for the organization name.
  2. California Attorney General Notice filed Apr 12, 2024
    Filed as “Kaiser Foundation Health Plan, Inc.”

Last updated Oct 20, 2026. Our summaries are written in our own words from the official filings above. Spotted an error? Report a correction.