Orange County Radiation Oncology Center

Orange County Radiation Oncology Medical Group experienced an email phishing incident resulting in unauthorized access to patient information in a small number of email and SharePoint accounts between December 13, 2024, and December 16, 2024. The organization became aware of the incident on June 13, 2025. Affected data includes names and other patient health information. The organization is providing credit monitoring and additional cybersecurity training to staff.