Orange County Radiation Oncology Medical Group data breach

Clerk's notes

Orange County Radiation Oncology Medical Group, a California-based healthcare provider, officially reported a data security incident on July 15, 2025. The breach itself occurred on December 13, 2024, involving unauthorized access to the group's internal systems. The incident is currently under investigation.

While the specific categories of data involved have not been publicly detailed, the incident concerns unauthorized access to information maintained by the medical group. Individuals who received a notification letter from Orange County Radiation Oncology Medical Group should be aware that their personal information may have been affected.

Receiving a formal notification letter is the primary indicator that your data was involved in this security incident. These letters typically contain important details regarding the breach, including any specific recommendations from the organization to help protect affected individuals.

It is generally advisable to remain vigilant for any unusual activity across your financial accounts or other personal records. Carefully read any correspondence from Orange County Radiation Oncology Medical Group for their specific guidance and the resources they may be offering.

If you have received a data breach notification from Orange County Radiation Oncology Medical Group, it means your personal information was potentially exposed. You may be entitled to a confidential, free case review to understand your legal options and how this incident might affect you.

If a notification letter about this breach reached you, see every California data breach on file or browse all cases.