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AltaMed Health Services Corporation: data breach filings, state by state

AltaMed Health Services Corporation has 10 data breach filings on record in 2 government portals. The latest was reported to HHS OCR on Feb 26, 2026, with 501 in total. Data exposed, as filed: Medical / health information, Social Security number, Postal address, Email address.

4,530people in total, as reported to HHS OCR on Jun 13, 2025
10filings in 2 government portals
Feb 26, 2026latest filing, HHS OCR

By portal

PortalFilingsLatest reportPeople in the latest filing
HHS OCR2Feb 26, 2026501 in total
California AG8Feb 12, 2026Not published

Counts are the organization's own, as filed with each agency. Most state portals count their own residents only, so no single state shows the whole incident. An organization can file more than once for the same incident, and for different ones.

Case file

Breach window
Nov 27, 2025
Discovered
No discovery date stated in the letters we read
Offered to those affected
credit or identity monitoring through Experian (term not stated in the letter we read)
Third party named
No
Prior incidents
4 earlier incidents on record for this organization

Open the case fileWord document

Every filing with the agency links, each state's record against its statutory period with the citation, what the letter offers, prior incidents. Letter facts are quoted so you can check them.

The next state to file on AltaMed Health Services Corporation reaches subscribers within the hour. With the count, the data exposed and the letter. The Team plan follows the companies and vendors you name in every state. Start a 14-day free trial.
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Every filing

OrganizationSourceStateReportedResidents affectedData exposed
AltaMed Health Services Corporation HHS OCR US Feb 26, 2026 501 Medical / health information
AltaMed Health Services Corporation California AG CA Feb 12, 2026 Not published Social Security numberPostal addressName
AltaMed Health Services Corporation California AG CA Jun 13, 2025 Not published Email addressPostal addressName
AltaMed Health Services Corporation HHS OCR US Jun 13, 2025 4,530 Medical / health information
AltaMed Health Services California AG CA Aug 4, 2023 Not published Social Security numberDate of birthPostal addressName
AltaMed Health Services Corporation California AG CA Jun 29, 2023 Not published Social Security numberDate of birthEmail addressPostal address+1
AltaMed Health Services Corporation California AG CA May 30, 2019 Not published Social Security numberFinancial / bank accountMedical / health informationHealth insurance+2
AltaMed Health Services Corporation California AG CA May 15, 2019 Not published Social Security numberMedical / health informationHealth insurancePhone number+2
AltaMed Health Services Corporation California AG CA Feb 15, 2019 Not published In the letter (PDF)
AltaMed Health Services Corporation California AG CA Aug 29, 2014 Not published Financial / bank accountMedical / health informationPostal addressName

Data reproduced from public government filings. Each row opens the record with the agency link. Spot an error? Email support@breachtally.com with the page link. Corrections are applied and noted.