Case file: Catalyst Physician Group
Every government filing on this incident, the dates as stated, and the days to notice against each state's statute. Built from the records on Nov 9, 2026, agency link on every row. Not legal advice.
The incident
- Breach window
- Dec 2, 2025 to Dec 18, 2025
- Discovered
- May 26, 2026, as stated in the California letter
- State and federal records
- 3 filings, Sep 11, 2026 to Sep 15, 2026
- Residents counted
- 242,200 in 2 states (TX, MA), latest filing per state
- Everyone affected
- 248,144, as reported to Texas AG on Sep 15, 2026
- Information exposed
- Social Security number, Medical / health information, Date of birth, Postal address
- 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
The letter: "After an extensive forensic investigation and manual document review, on May 26, 2026, Aesto confirmed that between on or about December 2, 2025, and December 18, 2025, a limited amount of your protected health information pertaining to ..."
Filings
| Agency | Record date | People | In total | Days to notice | Links |
|---|---|---|---|---|---|
| Texas Texas AG | Sep 15, 2026 | 242,121 | 248,144 | 112 days, statute 60 days, over | Record |
| Massachusetts Massachusetts OCABR | Sep 12, 2026 | 79 | 109 days, statute no fixed period | Record | |
| California California AG | Sep 11, 2026 | Not published | 108 days, statute 30 days, over | Letter Record |
People is the count the filing gives, residents of the state unless marked total. Days to notice runs from the discovery date the letter states, or from the end of the breach window when no letter states one, to the date on the state's first record of the incident. "Over" marks a count past the days the state's statute allows for notice to residents. The statute's trigger is a question of fact, the days are arithmetic.
Notice timing, state by state
- 112 days from discovery (May 26, 2026) to the Texas record (Sep 15, 2026). Statute: 60 days from determination that the breach occurred (Tex. Bus. & Com. Code § 521.053).
- 109 days from discovery (May 26, 2026) to the Massachusetts record (Sep 12, 2026). Statute: no fixed period from knowledge or reason to know of the breach (Mass. Gen. Laws ch. 93H, § 3).
- 108 days from discovery (May 26, 2026) to the California record (Sep 11, 2026). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
The statutes
- Texas: 60 days to notify residents from determination that the breach occurred, Tex. Bus. & Com. Code § 521.053. Attorney General within 30 days of determination when 250 or more Texas residents are affected.
- Massachusetts: no fixed period to notify residents from knowledge or reason to know of the breach, Mass. Gen. Laws ch. 93H, § 3. Attorney General and OCABR as soon as practicable and without unreasonable delay, every breach.
- California: 30 days to notify residents from discovery or notification of the breach, Cal. Civ. Code § 1798.82. Sample notice to the Attorney General when more than 500 Californians are notified, within 15 days of the consumer notice (effective 2026).
Sources and method
Records as published by Texas AG, Massachusetts OCABR, California AG. Letter facts (discovery date, monitoring, third party) are read from the consumer letter the agency posted, 1 letter read for this incident, and quoted so you can check them. Texas and HHS publish no letters. First-seen times on each record page. Spot an error? Email support@breachtally.com with this page link.