MedCore Health Systems Data Breach

Investigation Open

Case File · California Attorney General · Filed Jul 10, 2026

Quick Facts

State Filed
California
Date Reported to AG
Jul 10, 2026
Date of Breach
May 14, 2026
Records Affected
847,000
Status
Investigation Open
Last Updated
Jul 20, 2026
Data Types Exposed
SSNMedical RecordsFinancial Account

What Happened

MedCore Health Systems reported a data breach to the California Attorney General on July 10, 2026, affecting approximately 847,000 individuals. The breach occurred when an unauthorized third party gained access to MedCore's patient management database between May 14 and May 28, 2026. Exposed information includes Social Security Numbers, medical record numbers, health insurance details, dates of birth, and in some cases, financial account information used for billing. MedCore has notified affected individuals and is offering two years of complimentary credit monitoring.

Were You Affected?

You may have been affected by the MedCore Health Systems data breach if:

  • You received a written data breach notification letter from MedCore Health Systems
  • You are or were a customer, patient, or employee of MedCore Health Systems
  • Your information was held by MedCore Health Systems in California
  • Your Social Security Number may have been compromised
  • Your bank account or payment card information was potentially exposed
  • Your medical or health information was in the compromised system

"According to a filing with the California Attorney General's office on July 10, 2026, this breach affected approximately 847,000 individuals."

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This case file references a public filing made with the California Attorney General's office. This website is not affiliated with, endorsed by, or operated by any state government agency.