The Golden State Radiation Oncology Data Breach: Incident Facts and Free Case Review

Golden State Radiation Oncology is a specialized healthcare provider focused on cancer treatment and radiation therapy services. As a medical facility, the organization maintains highly sensitive patient records, including detailed clinical histories, diagnostic imaging, and insurance billing information. In 2025, the company officially reported a data security incident to the California Attorney General, confirming that unauthorized access to their systems occurred. If you have received a formal data breach notification letter from the organization, it indicates that your personal or protected health information was likely contained within the impacted files. This notice is intended to inform you of the incident, the steps the provider is taking to secure their network, and the resources available to help you protect your identity and medical privacy.

Received a Golden State Radiation Oncology notification letter? Find out in minutes if you qualify for compensation.

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State: California
Breach date: December 13, 2024
Reported: July 15, 2025

Received the Golden State Radiation Oncology notification letter? The Golden State Radiation Oncology case file tracks this filing.

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.

Were you affected by the Golden State Radiation Oncology breach?

If you received a notification letter, send it to us for a free, no-obligation review. We'll explain your options in plain English. Class actions are first-to-file — reaching out early matters.

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