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Check Your Eligibility

Mendocino Community Health Clinic Data Breach

On October 2, 2025, TriZetto Provider Solutions detected a data breach affecting protected health information for 3,500 MCHC patients. Sensitive data, including Social Security numbers and health insurance details, was exposed. If you were affected, take steps to protect your information and explore your legal options to join a class action lawsuit.

Mendocino Community Health Clinic
Date of Breach: December 9, 2025
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Who was affected:

Clients of Mendocino Community Health Clinic

Impacted Data:

Patient and/or primary insured name

Address

Date of birth

Social Security number

Health insurance member number (including Medicare Beneficiary Identifier in some cases)

Health insurer name

Primary insured or dependent information

Check Your Eligibility

Mendocino Community Health Clinic (MCHC) recently reported a data breach involving its electronic health record system provider, OCHIN, and its subcontractor, TriZetto Provider Solutions (TPS). The breach may have compromised sensitive health information for approximately 3,500 MCHC patients. The breach was reported to OCHIN on December 9, 2025, and subsequently brought to MCHC’s attention.

Mendocino Community Health Clinic’s Data Breach Investigation

On October 2, 2025, TPS identified suspicious activity within a web portal used by healthcare providers to access their systems. Upon discovering the incident, TPS immediately launched an investigation, engaged cybersecurity experts (Mandiant), and notified law enforcement. The breach was confined to TPS’s systems, and no unauthorized activity was detected within OCHIN’s systems.

While TPS took immediate action to secure its environment, the breach involved eligibility transaction reports that contained protected health information (PHI) for MCHC patients. The breach was not reported as part of OCHIN’s system, and the compromised data included personal health and demographic information.

The breach was identified and reported by TPS, and MCHC was notified by OCHIN in December 2025. MCHC has taken steps to inform affected patients and will continue to work closely with OCHIN and TPS to monitor the situation and ensure appropriate safeguards are in place.

When Did This Breach Occur?

  • Suspicious activity was detected by TPS on October 2, 2025.

  • The breach was confirmed and reported to OCHIN by December 9, 2025.

  • Affected individuals will be notified by MCHC in January 2026, with additional notification expected from TPS in February 2026.

What Information Was Breached?

The data potentially exposed in the breach includes the following:

  • Patient and/or primary insured name

  • Address

  • Date of birth

  • Social Security number

  • Health insurance member number (including Medicare Beneficiary Identifier in some cases)

  • Health insurer name

  • Primary insured or dependent information

  • Other demographic, health, and health insurance information

No payment card, bank account, or other financial information was involved in this incident.

What You Can Do

If you were affected by the MCHC data breach, it is important to take steps to protect your personal information:

  • Monitor your accounts: Regularly check your credit card bills, bank statements, and other accounts for suspicious activity.

  • Place a fraud alert or credit freeze: You can contact the three major credit bureaus (Equifax, Experian, TransUnion) to place fraud alerts or security freezes on your credit files to protect against identity theft.

  • Enroll in identity monitoring services: TPS is offering free credit monitoring and identity theft protection services through Kroll. This will help you monitor your credit and detect any fraudulent activity. Instructions for enrollment will be provided by TPS in February 2026.

  • Report suspicious activity: If you notice any unauthorized transactions or suspect identity theft, report it immediately to your financial institutions, local law enforcement, the U.S. Federal Trade Commission, and your State Attorney General.

By remaining vigilant and taking the necessary precautions, you can help protect your information and minimize the risk of identity theft and fraud.

File a Data Breach Lawsuit Against Mendocino Community Health Clinic

If you received a notification about the MCHC data breach or believe your personal health information was exposed, you may be entitled to compensation. The breach of sensitive health information, including Social Security numbers and insurance details, can lead to identity theft, fraud, and emotional distress.

Joining a class action lawsuit can provide you with an opportunity to seek restitution for the damages caused by this breach and hold MCHC, OCHIN, and TPS accountable for their failure to secure your personal data.

Contact us at Class Action U, where we’ll connect you with a lawyer skilled in class action lawsuits. If you’ve been contacted about this breach, received notice, or discovered you were impacted, fill out our quick, easy, and secure form to sign up. There is no cost to reach out to our legal partner and no obligation after speaking with someone from our team.

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Frequently Asked Questions

A data breach occurs when sensitive, confidential, or protected information is accessed, stolen, or disclosed without authorization. Data breaches often occur through phishing emails, malware, weak passwords, insider threats, or unsecured databases. Indicators of a data breach can include unexpected password resets, suspicious account activity, unauthorized transactions, or notifications from companies about compromised information.If you suspect your data has been compromised, you must take measures and act quickly. Change passwords, enable two-factor authentication, review your financial accounts for unusual activity and consider freezing your credit.

Once stolen, your personal information may be sold on the dark web or used for identity theft and financial fraud. In some cases, hackers use the data to extort companies or launch further attacks. Victims often face long-term risks, including damage to credit and privacy.

If you receive a data breach notification, don’t ignore it. Immediately change passwords for the affected account and any others that share credentials. Enroll in any free credit monitoring services offered and monitor financial statements closely.

To pursue a data breach claim, you’ll need documentation showing your information was compromised and proof of resulting harm, such as fraudulent charges, credit score damage, or identity theft reports. Notification letters, financial records, and communication with the breached company can help support your claim.

Yes. If a company fails to protect consumer data or delays notifying victims, it may be held liable under state and federal privacy laws. Many victims join class action lawsuits to recover financial losses and hold negligent organizations accountable.

Data breach settlements vary widely depending on the size of the breach, type of data compromised, and damages suffered by victims. Payouts may include cash compensation, identity theft protection, or reimbursement for losses. Many settlements range from a few hundred to several thousand dollars per person. A skilled data breach lawyer can guide victims through the complex legal process, ensuring their rights are protected. If you’ve received a data breach notification or believe your personal data was exposed, you may be eligible for compensation. Contact Class Action U to learn more about how to join a data breach lawsuit and understand the process of filing.