BreachCensus

Stockton Cardiology Medical Group

healthcareHealthcareUnited States of America

Stockton Cardiology Medical Group is a healthcare organisation in California. It appears on the HHS OCR breach portal and the California Attorney General breach-notification register with 3 confirmed incidents; the most recent notice was filed on March 20, 2026.

Data as of September 19, 2026.

Confirmed incident

US-CA

Occurred
December 15, 2025
Disclosed
March 20, 2026

Timeline

  1. March 20, 2026
    Reported to regulator Regulator

    CA AG breach notification: an unknown number of California residents affected

    source
What a California notice means

Governed by Cal. Civ. Code §1798.82. A copy of the notification must be sent to the Attorney General when a single breach requires notifying more than 500 California residents.

Note: no affected-count is published on this register.

California breach-notification register ↗

Confirmed incident

US-CA — Hacking/IT Incident

Disclosed
March 18, 2026
Records affected
90,000

Timeline

  1. March 18, 2026
    Reported to regulator Regulator

    HHS OCR breach portal listing: Hacking/IT Incident; Network Server

    source
Unverified claim

US — Ransomware Attack

This is an unverified claim — it has allegedly happened to this organisation, as posted by a source below, but has not been confirmed by a regulator, a court filing or the organisation’s own disclosure.

Timeline

  1. February 17, 2026
    Claimed by threat actor (unverified) Claim

    Ransomware leak-site claim (ransomware_live)

    source