Golden State Radiation Oncology data breach

Clerk's notes

Golden State Radiation Oncology, based in California, has formally reported a data security incident that resulted in the exposure of personal information. The breach occurred on December 13, 2024, and the official notification was filed on July 15, 2025, initiating a public record of the event.

The specific categories of information involved in this breach have not been detailed in the public filing. However, individuals are advised that any exposure of their data can carry risks, irrespective of the particular type of information. The company has not disclosed the number of people affected by this incident.

The current status of this breach case is listed as "investigating." This means that authorities and potentially Golden State Radiation Oncology itself are working to understand the full scope of the breach, including how it happened, what information was accessed, and who was impacted. An ongoing investigation means details may still emerge.

If you received a notification letter from Golden State Radiation Oncology, it is prudent to remain vigilant. We recommend monitoring any accounts or statements for unusual activity and considering placing a fraud alert on your credit report. These general steps can help detect and mitigate potential misuse of your information.

Understanding your options after a data breach can be complex. Consulting with a legal professional can provide clarity on your rights and whether you may be entitled to compensation for damages caused by the exposure of your personal information. A free case review can help you explore these possibilities without obligation.

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