Arch Health Partners, Inc. d/b/a Palomar Health Medical Group data breach

Clerk's notes

Arch Health Partners, operating as Palomar Health Medical Group in California, has confirmed a data breach event that occurred on or about May 5, 2024. This incident was formally reported on October 15, 2025, according to regulatory filings.

The nature of the breach and the specific categories of personal information involved have not been publicly detailed. However, individuals who received a notification letter from Arch Health Partners should assume that some of their personal data was potentially exposed as a result of this security lapse.

As of the filing date, this data breach case is currently undergoing investigation. This status indicates that authorities and potentially legal teams are actively reviewing the circumstances surrounding the incident, the extent of the exposure, and the responsibilities of the parties involved.

For those who received an official notice from Arch Health Partners d/b/a Palomar Health Medical Group, it is prudent to remain vigilant. Regularly monitor any financial accounts for unusual activity and be cautious of unsolicited communications that might attempt to acquire more personal details.

Understanding the implications of a data breach can be complex. If you have been notified of this incident, you may wish to consider seeking a complimentary case review to learn more about your rights and any potential recourse available.

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