In addition, John Muir Health provides outpatient services throughout the community and urgent care centers in Brentwood, Concord, San Ramon and Walnut Creek.

John Muir Medical Center, Concord, is a 244-bed acute care facility that serves Contra Costa and southern Solano counties.

The hospital's orthopedic department includes joint replacement, extremity care, spinal surgery and sports medicine.

[3] The John Muir Medical Center in Walnut Creek opened in 1965 after the efforts of several local doctors, who received financing in part from a Hill–Burton Act grant.

[4] Concord Hospital was established in 1930, in a modest one-story home at 2334 Almond Avenue (which exists to this day and is used as a private residence).

[8] On January 13, 2022, John Muir Health was sued by Dr. Alicia Kalamas who alleged that institutional failures led to the death of a child and several adult patients.

[10][11] John Muir Health responded to the article stating that the surgery was properly performed and that the child was frail and could have died even under optimal circumstances.

[12] On April 15, 2022, the Medical Board of California launched an investigation of John Muir and its doctors relating to the death of Ailee Jong.