Washington State's healthcare market is driven by the Seattle-Puget Sound region, one of the fastest-growing tech and healthcare economies in the country. Major health systems including Providence, Virginia Mason Franciscan Health (now part of CommonSpirit), and MultiCare Health System dominate the inpatient market, while Amazon's growing health ventures and other tech-adjacent healthcare disruptors are increasingly shaping the commercial landscape.
Premera Blue Cross and Regence BlueShield are the two dominant commercial insurers in Washington, and most providers need to credential with both. Premera is larger in western Washington while Regence has stronger presence in eastern Washington, but both have statewide networks. Group Health (now Kaiser Permanente Washington) has a significant managed care presence, particularly in the Seattle metro area.
Washington Apple Health is the state Medicaid program, administered by the Health Care Authority (HCA). The program includes both managed care and fee-for-service components. Managed care plans include Amerigroup Washington, Community Health Plan of Washington, Coordinated Care (Centene), Molina Healthcare of Washington, and United Healthcare Community Plan — each requiring separate credentialing.
Arctic Health helps Washington providers coordinate credentialing with Premera, Regence, Kaiser Permanente, and all Apple Health managed care plans, managing simultaneous submissions to minimize time to revenue.
Licensure Requirements in Washington
Average Credentialing Timeline
Typical time from application submission to approval in Washington
Washington Medicaid Program
Key Regulations in Washington
Major Payers in Washington
Frequently Asked Questions
What is the difference between Premera Blue Cross and Regence BlueShield in Washington?
Premera Blue Cross and Regence BlueShield are two separate Blue Cross Blue Shield licensees operating in Washington. Premera dominates western Washington; Regence is stronger in eastern Washington. Most practices credential with both.
How does Washington Apple Health managed care credentialing work?
Providers must enroll with the HCA for Apple Health and then credential separately with each managed care plan serving their region. Plans include Amerigroup, CHPW, Coordinated Care, Molina, and UHC.
Do I need separate DO licensure in Washington?
Yes. DO providers are licensed through the Washington Osteopathic Medicine Board (under the Department of Health), not the Washington Medical Commission which licenses MDs.
Reviewed by Arctic Health Team , Credentialing Specialists
Last reviewed: September 2026
Information on this page reflects our experience as of September 2026. Credentialing requirements, payer processes, and state regulations may change. Contact us or check the relevant state medical board and payer websites for the most current requirements. This content is for informational purposes only and does not constitute legal or professional advice.