Thank you for your interest in becoming a participating provider within the Western Health Advantage network. All providers are delegated through Western Health's contracted medical groups, IPAs, hospital system and partners.

WHA Service Area

  • Sacramento County
  • El Dorado County
  • Marin County
  • Napa County
  • Placer County
  • Solano County
  • Sonoma County
  • Yolo County

To search by zip code, use our service area search.


Medical Group/IPA Professional Services by County

Sacramento, El Dorado, and Placer County
  • Hill Physicians
  • Mercy Medical Group
Yolo County
  • Woodland Clinic Medical Group
Solano County
  • NorthBay Medical Group
Marin, Napa, and Sonoma County
  • Meritage Medical Network
  • Providence (formerly St. Joseph Health)

Hospital Base Services (including DME and ambulance)

Sacramento, El Dorado, and Placer County
  • Dignity Health
Solano County
  • NorthBay Medical Center
  • NorthBay VacaValley Hospital
Marin County
  • Marin General Hospital
  • Providence (formerly St. Joseph Health)
Sonoma County
  • Healdsburg District Hospital
  • Petaluma Valley Hospital
  • Santa Rosa Memorial Hospital
  • Sonoma Valley Hospital
  • Sonoma West Medical Center
Napa County
  • Queen of the Valley Medical Center

WHA's Partners in Care

Chiropractic and Acupuncture Services
  • Landmark Healthplan of California
Vision Services
  • MESVision
Dental Services
  • Delta Dental
Behavioral Health and Chemical Dependency
  • Magellan Behavioral Health

Learn more about WHA’s partners.

For the latest Coronavirus (COVID-19), click here: getting care, testing and vaccines