Hospitals in Contra Costa County, CA
8 hospitals, 8 with emergency services. Acute Care Hospital: 7 · Psychiatric Hospital: 1.
Compare the 4 top-rated hospitals side by side →
- Contra Costa Regional Medical Center(925) 370‑5000Acute Care Hospital · Martinez · ER · Medicare rating 4 of 5 · Full profile
- John Muir Behavioral Health Center(925) 674‑4101Psychiatric Hospital · Concord · ER · Full profile
- John Muir Medical Center - Concord Campus(925) 682‑8200Acute Care Hospital · Concord · ER · Medicare rating 4 of 5 · Full profile
- John Muir Medical Center - Walnut Creek Campus(925) 939‑3000Acute Care Hospital · Walnut Creek · ER · Medicare rating 2 of 5 · Full profile
- Kaiser Foundation Hospital - Antioch(925) 813‑6500Acute Care Hospital · Antioch · ER · Medicare rating 1 of 5 · Full profile
- Kaiser Foundation Hospital - Walnut Creek(925) 295‑4000Acute Care Hospital · Walnut Creek · ER · Medicare rating 3 of 5 · Full profile
- San Ramon Regional Medical Center(925) 275‑9200Acute Care Hospital · San Ramon · ER · Medicare rating 4 of 5 · Full profile
- Sutter Delta Medical Center(925) 779‑7200Acute Care Hospital · Antioch · ER · Medicare rating 3 of 5 · Full profile
Cities in Contra Costa County with hospitals
Nursing homes, hospice, home health and dialysis
Medicare-certified providers, with Medicare star ratings and official data.
Outpatient surgery centers
Medicare-certified ambulatory surgery centers: kinds of surgery, Medicare quality measures and patient survey.
Medical supply stores
Medical equipment suppliers enrolled in Medicare: wheelchairs, walkers, oxygen, CPAP, diabetic supplies and more.
ER wait times and Medicare ratings
Ranked only by official Medicare (CMS) numbers.
Care in Contra Costa County: specialties, conditions and doctors
Specialties listed by hospitals here
Conditions listed by hospitals here
The number is how many hospitals here list it on their own website (hospitals with a reviewed website profile only).
Health centers, clinics and pharmacies in Contra Costa County
Addiction and mental health treatment in Contra Costa County
From SAMHSA’s FindTreatment.gov. In a crisis, call or text 988.
Common questions
How many hospitals are in Contra Costa County, California?
Our directory lists 8 hospitals in Contra Costa County: Contra Costa Regional Medical Center, John Muir Behavioral Health Center, John Muir Medical Center - Concord Campus, John Muir Medical Center - Walnut Creek Campus, Kaiser Foundation Hospital - Antioch, Kaiser Foundation Hospital - Walnut Creek, San Ramon Regional Medical Center and Sutter Delta Medical Center.
Which hospitals in Contra Costa County have an emergency room?
According to Medicare (CMS) data: Contra Costa Regional Medical Center, John Muir Behavioral Health Center, John Muir Medical Center - Concord Campus, John Muir Medical Center - Walnut Creek Campus, Kaiser Foundation Hospital - Antioch, Kaiser Foundation Hospital - Walnut Creek, San Ramon Regional Medical Center and Sutter Delta Medical Center. In a medical emergency, call 911.
What are the Medicare star ratings of hospitals in Contra Costa County?
In the current CMS overall rating (1 to 5 stars): Contra Costa Regional Medical Center, 4 stars, John Muir Medical Center - Concord Campus, 4 stars, San Ramon Regional Medical Center, 4 stars, Kaiser Foundation Hospital - Walnut Creek, 3 stars, Sutter Delta Medical Center, 3 stars, John Muir Medical Center - Walnut Creek Campus, 2 stars and Kaiser Foundation Hospital - Antioch, 1 star. Other hospitals here are not rated by CMS.
Source: Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-26, retrieved 2026-11-13. Basic profiles: services not yet reviewed in detail.