Emanuel Medical Center Data Breach Exposes Sensitive Patient Information

On May 22, 2025, Emanuel Medical Center, a 209-bed acute care hospital in Turlock, Calif., detected suspicious activity on its computer systems. The hospital secured its systems and launched an investigation with the help of cybersecurity experts.

According to the official notice of data security incident, the investigation determined that an unauthorized third party gained access to a portion of Emanuel Medical Center’s computer systems between May 21 and May 24, 2025.

The breach exposed both personally identifiable information (PII) and protected health information (PHI) of patients.

The types of information present in the compromised files varied by individual but included full name, date of birth, contact information, government identification number (such as a Social Security or driver’s license number), health insurance information, patient identification number, date(s) of service, provider names, diagnosis, treatment information, prescription details, medical history and lab reports.

A total of 28,963 individuals were affected by this breach, according to a U.S. Department of Health and Human Services filing.

Emanuel Medical Center’s response

To support those affected, Emanuel Medical Center is mailing individual notification letters to impacted individuals for whom it has a current address.

Individuals who receive a notification letter are encouraged to:

• Carefully review the letter for specific details and instructions
• Remain vigilant for unauthorized financial activity by reviewing account statements and free credit reports
• Consider placing a fraud alert or security freeze on their credit file, which can be done at no cost
• Immediately report any suspicious activity or suspected identity theft to their financial institutions and law enforcement

The hospital has established a dedicated, toll-free call center at 855-815-3937, available Monday through Friday from 9 a.m. to 9 p.m. Eastern time, to answer questions and provide guidance.