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Confirmed breach

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

USUnited States

Arch Health Partners, Inc. d/b/a Palomar Health Medical Group (United States) notified the California Attorney General of a data breach on 15 October 2025. The breach began on 5 May 2024, 528 days before it was reported.

Status
Confirmed breach
People affected
Not reported yet
Reported
15 October 2025
Breach began
5 May 2024
Time to tell
528 days (the median in California’s notices over the last year: 154 days)

What was exposed

The register’s list does not say what was exposed; the notice it links to (under Sources) usually does.

Sources

Official notices are read by code from the regulator’s own register. More notices to California. · Corrections and changes

If Arch Health Partners, Inc. d/b/a Palomar Health Medical Group had your data

  1. Look for Arch Health Partners, Inc. d/b/a Palomar Health Medical Group’s own notice or letter: it should say what of yours was involved. Keep it.
  2. The register’s list does not say what was exposed; the notice it links to (under Sources) usually does. If Arch Health Partners, Inc. d/b/a Palomar Health Medical Group has a password of yours, change it now to be safe.
  3. Expect scams that use your details: calls, texts or emails pretending to be Arch Health Partners, Inc. d/b/a Palomar Health Medical Group, your bank or the police. Never give codes or passwords, never approve a sign-in you did not start, never move money.

One email to confirm first. We use your address only for this alert, and one click deletes it.

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From the data breach tracker: official notices, breach databases and the news, every fact with its source. Open data (CC BY 4.0) · How the tracker works · Official registers · Corrections and changes · Found a mistake? Tell us and we correct it.