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Catalyst Physician Group: data breach filings, state by state

Catalyst Physician Group has 3 data breach filings on record in 3 government portals. The latest was reported to Texas AG on Sep 15, 2026, with 242,121 Texas residents. Data exposed, as filed: Social Security number, Medical / health information, Date of birth, Postal address.

242,200residents counted in 2 states (TX, MA). Latest filing per state, last twelve months
248,144people in total, as reported to Texas AG on Sep 15, 2026
3filings in 3 government portals
Sep 15, 2026latest filing, Texas AG

By portal

PortalFilingsLatest reportPeople in the latest filing
Texas AG1Sep 15, 2026242,121 Texas residents
Massachusetts OCABR1Sep 12, 202679 Massachusetts residents
California AG1Sep 11, 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
Dec 2, 2025 to Dec 18, 2025
Discovered
May 26, 2026, as stated in the California letter
Offered to those affected
credit or identity monitoring through Experian (term not stated in the letter we read)
Third party named
No
Days to notice
Past the statutory period in all 2 states that set one, counted from discovery to each state's first record

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.

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Every filing

OrganizationSourceStateReportedResidents affectedData exposed
Catalyst Physician Group Texas AG TX Sep 15, 2026 242,121 Social Security numberMedical / health informationDate of birthPostal address+1
Catalyst Physician Group Massachusetts OCABR MA Sep 12, 2026 79 Social Security numberMedical / health information
Catalyst Physician Group California AG CA Sep 11, 2026 Not published Medical / 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.