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Latest / California / August 2026

Quantum Health, Inc.

Quantum Health, Inc. notified California AG on Aug 14, 2026 of a data breach, which occurred between May 29, 2026 and Jun 1, 2026.

Organization
Quantum Health, Inc.
Source
California AG · source record
Date reported
Aug 14, 2026
Date(s) of breach
05/29/2026, 06/01/2026
Residents affected
Not published by this source
Data exposed
Not stated in the source listing
Notice letter
Not available
First seen by BreachTally
2026-10-30 15:26 UTC

Dates and counts as filed by the organization with the agency. The breach window and the report date often differ by months.

Other filings by Quantum Health, Inc.

OrganizationSourceStateReportedResidents affectedData exposed
Quantum Health, Inc. Texas AG TX Oct 28, 2026 273,111 Social Security numberMedical / health informationHealth insuranceName
Quantum Health, Inc. Washington AG WA Aug 14, 2026 5,909 Social Security numberMedical / health informationHealth insuranceDate of birth+1
Quantum Health, Inc. Massachusetts OCABR MA Jul 30, 2026 1 Social Security numberMedical / health information
Quantum Health HHS OCR US Jul 29, 2026 2,104 Medical / health information
First seen by BreachTally at 15:26 UTC on Oct 30, 2026. New filings reach paid subscribers within 30 minutes of the agency posting, with the data types and the letter. Start a 14-day free trial.

Data reproduced from a public government filing. Spot an error? Email support@breachtally.com with the record link. Corrections are applied and noted.