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AltaMed Data Breach Investigation
Shamis & Gentile P.A., one of the nation's premier class action law firms specializing in data breach cases, is investigating the AltaMed Health Services Corporation data breach.
If you were affected by the data breach, your sensitive personally identifiable information may have been exposed, and you may be eligible for compensation.
About AltaMed Health Services Corporation
AltaMed Health Services Corporation is a community-based health provider that serves Latino and multi-ethnic communities throughout Southern California. Founded in 1969, AltaMed has grown into a large health network focused on delivering primary care, social programs, and managed care services to underserved populations.
The organization operates through an integrated delivery system, partnering with providers and health plans to offer comprehensive services across the region.
In 2020, AltaMed expanded its reach with the creation of AltaMed Health Network, Inc. (AHN), a managed care network serving over 250,000 Medi-Cal members, which brought their headcount to more than 1,800 employees.
What happened?
In August 2024, AltaMed Health Services Corporation experienced a data breach that exposed sensitive information belonging to patients and members. The breach occurred between August 5, 2024, and August 9, 2024.
AltaMed disclosed the incident to the California Attorney General’s office on June 13, 2025. Additionally, a second disclosure was made on Feb 2026.
AltaMed disclosed the cybersecurity incident to the U.S Department of Health and Human services, reporting 4,530 individuals affected.
What types of consumer information that were exposed?
Personally Identifiable Information:
- Social Security number
- Date of birth
- Driver or state license number
- Passport number
- Foreign national ID number
- Personal email
- Personal telephone
- Mother’s maiden name
- Username and password
Protected Health Information:
- Medical record number
- Medicare or Medicaid ID
- Medical billing information
- Doctor or provider name
- Date of service
- Payment for health services
- Medical history
- Medical treatment information
- Mental or physical condition or diagnosis
- Procedure information
- COVID test result or vaccination status
- Prescription information
- Incidental health reference
- Health insurance policy number
- Other health insurance information
- Genetic data
You May Be Entitled to Compensation
If your personal information was compromised in the AltaMed data breach, you may be entitled to compensation. Compensation can cover losses such as identity theft, time spent dealing with the breach, and emotional distress. Lawyers are actively investigating this breach and are prepared to help affected individuals join a class action lawsuit.
To find out if you qualify and to take the next step, complete the below form to join the lawsuit investigation.
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