Important Notice
Marin Community Clinics is notifying patients about a data security incident involving our business partner, TriZetto Provider Solutions, that may have affected some protected health information. We take the privacy and security of your information very seriously.
What Happened
Marin Community Clinics uses TriZetto Provider Solutions as a health insurance clearinghouse service to process insurance eligibility and claims information. On October 2, 2025, TriZetto discovered suspicious activity within a web portal used by some of its healthcare provider customers.
TriZetto immediately launched an investigation with external cybersecurity experts (Mandiant) and law enforcement. They determined that between November 2024 and October 2, 2025, an unauthorized individual accessed certain historical eligibility transaction reports stored on their system.
What Information Was Involved
The specific information varied by individual, but may have included:
- Name
- Address
- Date of birth
- Social Security number
- Health insurance member number (which in some instances may be a Medicare beneficiary identifier)
- Health insurance company name
- Primary insured or dependent information
- Other demographic, health, and health insurance information
The incident did NOT involve: Payment card information, bank account information, or other financial account information.
What We Are Doing
Upon discovering the incident, TriZetto:
- Immediately launched an investigation and engaged external cybersecurity experts (Mandiant)
- Took steps to eliminate the threat and secure their systems
- Notified law enforcement
- Confirmed there has been no unauthorized activity in their environment since October 2, 2025
- Committed to continuing to strengthen the security of their systems and applications
Marin Community Clinics is committed to protecting your information and will continue to work closely with TriZetto to monitor this situation.
Free Credit Monitoring and Identity Protection Services
What You Can Do
We recommend that you remain vigilant by:
- Reviewing your account statements regularly
- Monitoring your free credit reports for suspicious activity and errors
- Reviewing the Explanation of Benefits statements from your health insurer for any services you did not receive
TriZetto is offering complimentary credit monitoring, fraud consultation, and identity theft restoration services through Kroll at no cost to affected individuals. These services include:
- Credit monitoring
- Fraud consultation
- Identity theft restoration
- Dedicated call center support
Affected individuals will receive a separate notification from TriZetto (Kroll) with enrollment instructions.
Additional Resources
Free Annual Credit Reports
You have the right to one free credit report annually from each of the three nationwide credit reporting agencies:
- Website: www.annualcreditreport.com
- Phone: 1-877-322-8228
- Mail: Annual Credit Report Request Service, P.O. Box 105281, Atlanta, GA 30348-5281
Credit Reporting Agencies
Equifax
Phone: 1-800-685-1111
Website: www.equifax.com
Mail: P.O. Box 740241, Atlanta, GA 30374
Experian
Phone: 1-888-397-3742
Website: www.experian.com
Mail: P.O. Box 9554, Allen, TX 75013
TransUnion
Phone: 1-800-916-8800
Website: www.transunion.com
Mail: P.O. Box 1000, Chester, PA 19016
Additional Protective Measures
Fraud Alerts: Contact one of the credit reporting agencies to place a fraud alert on your credit file. A fraud alert is free and tells creditors to contact you before opening new accounts or making changes to existing accounts.
Security Freeze: You have the right to place a security freeze on your credit report. A security freeze prohibits a credit reporting agency from releasing any information from your credit report without your written authorization. Please note that placing a security freeze may delay, interfere with, or prevent the timely approval of any requests you make for new loans, credit, mortgages, employment, housing, or other services.
Filing a Complaint
You have the right to file a complaint with the U.S. Department of Health and Human Services Office for Civil Rights if you believe your privacy rights have been violated:
- Phone: 1-877-696-6775
Filing a complaint will not affect your care or services from Marin Community Clinics.
Contact Information
If you have questions about this incident, please contact:
Lindsay Boughey
Compliance & Operational Risk Officer
Email: compliance@marinclinic.org
Marin Community Clinics is committed to protecting the privacy and security of your health information.