John Muir Health - Walnut Creek Medical Center

1 breach821 affected in allHealthcare

Insider breachInsider exposed names and health records. Reported to the California AG.821 affectedHealthcareUSApr 13, 2023

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Every breach here links to its sources and official notices. Across Glyph: lawsuits, incidents and outages.

attack2026-09-25

John Muir Health - Walnut Creek Medical Center, 2023-04-13insider

data_types2026-09-25

John Muir Health - Walnut Creek Medical Center, 2023-04-13["names","health"]

records_basis2026-09-25

John Muir Health - Walnut Creek Medical Center, 2023-04-13hhs

records2026-09-25

John Muir Health - Walnut Creek Medical Center, 2023-04-13821

summary2026-09-25

John Muir Health - Walnut Creek Medical Center, 2023-04-13The covered entity (CE), John Muir Health – Walnut Creek Medical Center, reported that a workforce member posted a link to protected health information (PHI) on a publicly accessible website. This breach affected the PHI of 821 individuals.

Added2026-09-25

John Muir Health - Walnut Creek Medical Center, 2023-04-13

Added2026-09-25

John Muir Health - Walnut Creek Medical Center