The Memorial Radiation Oncology Medical Group Data Breach: Reported Filing Facts
Memorial Radiation Oncology Medical Group is a specialized healthcare provider focused on cancer treatment and radiation therapy services. As a medical entity, the organization collects and maintains sensitive patient information, including personal identifiers, clinical health records, and insurance billing details necessary for providing specialized care. This security incident was officially reported to the California Attorney General in 2025, confirming that unauthorized access to protected systems occurred. If you received a formal data breach notification letter from the medical group, it indicates that your personal or health-related information may have been involved in this event. We recommend reviewing the letter carefully to understand the specific scope of the exposure and the identity protection services being offered to you.
- State
- California
- Breach date
- December 13, 2024
- Reported
- July 15, 2025
What to do if you were affected
These general steps can help limit the risk of identity theft and fraud after any data breach.
Stay alert to targeted scams
Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.
Keep your notification letter
Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.
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