A data breach with Cardiovascular Medical Group of Southern California (“CMG” or “Cardiovascular Medical”) has potentially impacted the personal identifiable and private health information of its patients and employees, possibly putting these individuals at risk of heightened fraud and suspicious activity. Full names, social security, and other sensitive information may have been impacted by the breach.

Have you experienced any fraud or misuse of your information, or otherwise believe CMG alerting you that your information was impacted by the cybersecurity incident? Fill out the form below and join the investigation.

Shub Johns & Holbrook LLP is currently investigating Cardiovascular Medical for an apparent failure to safeguard sensitive consumer information in a data breach that was detected on or around January 11, 2026. Cardiovascular Medical Group of Southern California, a cardiology and internal medicine practice servicing Beverly Hills and surrounding communities, discovered that an unauthorized actor gained access to client data within CMG’s systems.

CMG has not indicated when the breach initially occurred nor has it reported the number of impacted individuals. Consumer information exposed in the breach has not been identified but may include full names, demographic information, contact information, health information, and other personal and private data.

The cybercriminals responsible for the breach may have already obtained and sold the compromised consumer information. In previous data breaches, victims of data theft have noticed identity theft attempts ranging from fraudulent charges on bank accounts or credit cards, medical and/or government services ordered in their name, or their information being posted on the dark web.

Affected by the Cardiovascular Medical Group Data Breach

If you or someone you know used services from Cardiovascular Medical Group of Southern California, are a current or former employee, or otherwise believe you were impacted by this data breach, let us know! Have you experienced any fraud or misuse of your information potentially as a result of the data breach? Fill out our data breach investigation form.

We would like to hear from you. Please complete the contact form on this page or contact us at 610-477-8380 or [email protected].