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Got a notice from Catalyst Physician Group? Here’s what to do.

Catalyst Physician Group announced a data breach on September 11, 2026, impacting patient information from December 2, 2025. If you received a notification, your sensitive personal and medical data may be exposed, creating long-term risks you should understand.

Your checklist

  1. 1

    Keep the letter

    Save the notice from Catalyst Physician Group and its envelope. The date you were told can matter for legal deadlines.

  2. 2

    Freeze your credit

    Your Social Security number is listed in the filing. A free freeze at Equifax, Experian and TransUnion stops new accounts being opened in your name.

  3. 3

    Check your insurance statements

    Medical or insurance information is listed. Read every explanation-of-benefits statement for care you did not receive.

  4. 4

    Get a free claim review

    Our legal team checks whether you can be paid for this breach. No fee unless you recover.

Step 4: free claim review

Tell us you got the Catalyst Physician Group notice. An attorney, not a call center, reads it and tells you plainly whether you have a claim.

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  • Reply within 24 hours

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About the Catalyst Physician Group breach

Reported to
California Attorney General
Date filed
September 11, 2026
People notified
Not stated
Cause in filing
Not stated

Information listed in the filing: Full Name, Date of Birth, Social Security Number, Medical Record Number, Health Insurance ID Number, Diagnosis and Treatment Information, Prescription Information, Provider and Treatment Dates, Billing and Financial Information.

Catalyst Physician Group recently reported a security incident where unauthorized individuals gained access to their internal digital environment. This breach, discovered and filed on September 11, 2026, affects patient data collected as early as December 2, 2025. While the exact method of access remains unspecified, it means someone may have viewed or copied your private information.

The information exposed in this breach is extensive and highly sensitive. It includes your Full Name, Date of Birth, Social Security Number, Medical Record Number, Health Insurance ID Number, Diagnosis and Treatment Information, Prescription Information, Provider and Treatment Dates, and Billing and Financial Information.

This combination of data creates significant, lasting risks. Unlike a compromised credit card which can be canceled, your medical and identity details are permanent. Exposure of your Social Security Number and Date of Birth puts you at risk for identity theft, fraudulent loans, and account takeovers. Medical data exposure can lead to medical identity fraud, where criminals use your identity to get care or bill your insurance.

If you received a notice from Catalyst Physician Group, it is crucial to act. Carefully review the letter to understand what specific data types of yours were compromised. Begin monitoring your financial accounts and medical records for any unusual activity. You may also consider placing a fraud alert or credit freeze with the major credit bureaus to prevent new accounts from being opened in your name.

Receiving a data breach notification confirms that your sensitive information was compromised. This can give you legal standing to explore your options. Our team offers a free, no-obligation review of your situation to help you understand what this breach means for you and whether you may be entitled to compensation.

Catalyst Physician Group data breach questions

How many people were affected by the Catalyst Physician Group data breach, and what was exposed?
The filing does not give a count of affected people and lists the following information as involved: Full Name, Date of Birth, Social Security Number, Medical Record Number, Health Insurance ID Number, Diagnosis and Treatment Information, Prescription Information, Provider and Treatment Dates, Billing and Financial Information. Your own letter is the best guide to what was exposed about you, since notices are usually tailored to each person.
Is the Catalyst Physician Group data breach letter legit or a scam?
A notice from Catalyst Physician Group in the mail matches the breach Catalyst Physician Group reported to the California Attorney General on September 11, 2026. Check that the company name and dates in your letter match that filing. A real notice of data security incident won't ask for your password, Social Security number or a payment — if it does, contact Catalyst Physician Group through a phone number or website you find yourself.
Did Catalyst Physician Group offer free credit monitoring?
Any free monitoring Catalyst Physician Group is offering will be described in the notice you received, along with an activation code and a sign-up deadline. Because Social Security numbers are listed in this filing, identity monitoring and a credit freeze matter more than usual. Enrolling does not give up your right to bring a claim.
Is there a Catalyst Physician Group data breach class action lawsuit?
Law firms often open an investigation after a breach notice like this one, and a class action lawsuit may follow. This page doesn't confirm that a lawsuit has been filed against Catalyst Physician Group. You usually don't have to join a class action to be included — if a settlement is reached, class members are notified and can file a claim.
What should I do after getting the Catalyst Physician Group data breach notice?
Keep the letter and the envelope, and note the date it arrived. Freeze your credit with Equifax, Experian and TransUnion, change any passwords the notice mentions, and sign up for any free credit monitoring the letter offers. Then check whether you may have a claim.
Where can I see the official Catalyst Physician Group breach notice?
Catalyst Physician Group's report is published by the California Attorney General: https://oag.ca.gov/privacy/databreach/reporting Compare it with the letter you received to confirm the dates and details match.
Do I need a Catalyst Physician Group data breach lawyer or attorney?
An attorney can read your notice and tell you whether a claim makes sense. A case review here is free, and data breach cases are usually handled on contingency, so there is no upfront cost.
Can I sue Catalyst Physician Group over the data breach?
It depends on what was exposed, the law in California and your own state, and whether you've been harmed. Most people take part through a class action rather than suing alone. Keep your notification letter — it's the proof that connects you to the breach.
How much could a Catalyst Physician Group data breach settlement or claim be worth?
There is no set amount, and no Catalyst Physician Group settlement is confirmed here. In past data breach settlements, payments depended on what data was exposed and on documented losses — fraud, out-of-pocket costs and time spent dealing with the breach. The filing lists Full Name, Date of Birth, Social Security Number as involved. Keep receipts and records; they're what damages claims are built on.

Other notices sent in California

Attorney advertising. This page reflects a public regulator filing; it does not mean a lawsuit has been filed or that the company did anything unlawful. Submitting a review request does not create an attorney-client relationship.