AltaMed Health Services Reports Data Breach Impacting Patient and Employee Information On February 17, 2026, AltaMed Health Services, a Southern California-based healthcare provider, disclosed a cybersecurity incident involving unauthorized access to its network. The breach potentially exposed sensitive personal and medical data, including names, dates of medical services, payment information, and Social Security numbers of patients and employees. The incident was detected after an unauthorized actor gained access to AltaMed’s systems, compromising personally identifiable information (PII) and protected health information (PHI). Law firm Lynch Carpenter, LLP, has initiated an investigation into potential legal claims against AltaMed on behalf of affected individuals. AltaMed serves as a major healthcare provider in the region, and the breach raises concerns about the security of patient data in the healthcare sector. No further details on the scope of the breach or the number of affected individuals have been released at this time.

The California Office of the Attorney General reported that AltaMed Health Services Corporation experienced a data breach involving unauthorized access to patient information starting on May 21, 2018. A total of 5,767 California residents were affected by this breach, with notification letters mailed on February 15, 2019. The compromised information may have included names, addresses, dates of birth, identification numbers, and medical record numbers.

On August 29, 2014, the California Office of the Attorney General reported a data breach involving AltaMed Health Services Corporation. The breach, discovered during an investigation into a former employee suspected of identity theft, potentially affects personal information of unknown individuals, though the exact number affected remains unspecified.