Human Resources Benefits Unit

Western Health Advantage

Western Health Advantage Logo 250WESTERN HEALTH ADVANTAGE is affiliated with the leading hospitals and doctors throughout Northern California. Choose from more than 2,800 doctors and 15 hospitals without limits — regardless of your plan.

With our unique Advantage Referral program you have choices and flexibility for specialty care. If your Primary Care Physician (PCP) determines that you require specialty care, simply ask to be referred to any of the specialists that participate in Advantage Referral. You have the choice of more than 2,100 SPECIALTY PROVIDERS in our Northern California network, not just those affiliated with your PCP’s medical group.  

We emphasize access to care. Care starts with the exceptional range and reputation of our providers across eight Northern California counties. Our service area includes Sacramento, Yolo, Solano, Placer, El Dorado, Marin, Sonoma and Napa counties.

Western Health Advantage Premium Rates

Western Health Advantage Plan Options

Benefits For Employees and Non-Medicare Retirees

Traditional HMO

Hospital Services DHMO

Deductible First HDHP

Helpful Documents

See each plan for Summary of Benefits and other plan documents

Visit the County of Sonoma webpage at

Video Presentation (29:07 minutes)

Customer Service and Group Numbers

To learn more about Western Health Advantage visit or call (888) 499-3198.

  • All Plans Employee Group #: 950201-A000
  • All Plans Retiree Group #: 950201-A001  

Service Area


With Contracted Hospitals

Western Health Advantage Service Area

Western Health Advantage is licensed in the following counties and zip codes-

Colusa: 95912

El Dorado: 95613, 95614, 95619, 95623, 95633, 95634, 95635, 95636, 95651, 95656, 95664, 95667, 95672, 95682, 95684, 95709, 95726, 95762

Marin: All Zip Codes

Napa: All Zip Codes

Placer: 95602, 95603, 95604, 95626, 95631, 95648, 95650, 95658, 95661, 95663, 95668, 95677, 95678, 95681, 95703, 95713, 95722, 95736, 95746, 95747, 95765

Sacramento: All Zip Codes

Solano: 94503, 94512, 94533, 94534, 94535, 94571, 94585, 95616, 95618, 95620, 95625, 95687, 95688, 95690, 95694, 95696

Sonoma: All Zip Codes

Yolo: All Zip Codes

Member Benefits and Tools


MyWHA is an online portal that offers the ability to change doctors, order replacement ID cards and much more through MyTOOLS and MyRESOURCES.


  • eBill: Pay Your bill
  • Change Your Doctors
  • Replacement ID Cards
  • Eligibility Information
  • Service Cost Estimator
  • Change Your Address
  • Order Printed Materials
  • Language Preference


  • Mental Health
  • Urgent Care
  • Healthy Living
  • Pharmacy information
  • Advantage Referral
  • Mobile Apps
  • Partners in Care
  • Assist America
  • WHA Provider Network

Connect with Your Doctor

Online Access to Your Doctor: You have options for staying connected with your doctor 24 hours a day, 7 days a week. By visiting you can learn about your medical group’s online capabilities, including these following services:

  • Email your doctor
  • Schedule an appointment
  • View lab test results
  • Access your medical record
  • Request prescription refills 

Provider Directory

Convenience of 24/7 searchability. Our online Provider Directory offers the most up-to-date access to doctors, hospitals, pharmacies and radiology centers. Search by specialty, hospital or medical group affiliation, patient acceptance, language and/or gender. Printed provider directories are also available upon request.

Helpful Documents

Contact Information

Benefits Unit

Human Resources Department

Business Hours
Monday – Friday
8:00 AM – 5:00 PM
Contact us by Phone
575 Administration Drive
Room 116 B
Santa Rosa, CA 95403
38.465237, -122.725363

Western Health Advantage Supplemental Material