Contracted providers who see Washington Apple Health (Medicaid) clients are required to enroll their National Provider Identifier (NPI) with the Washington State Health Care Authority (HCA) via a Core Provider Agreement (CPA). Providers must have an approved/pending application on file with the HCA, dated on or before the date they begin seeing Community Health Plan of Washington (CHPW) members.
All providers are required to enroll/have their NPI registered and active. Washington Administrative Code (WAC) 182-502-0005 allows the following option for providers who do not bill fee-for-service (FFS) Medicaid: Enroll with the agency (HCA) as a nonbilling provider. A completed nonbilling agreement registers your NPI with (makes your NPI known to) the state.
Only providers who have enrolled their NPI with the HCA can be paid for covered services, supplies, and equipment rendered to eligible Washington Apple Health Integrated Managed Care, Behavioral Health Services Only, and Apple Health Expansion clients.
Please read our Core Provider Agreement and NPI Status for Medicaid Services FAQ, updated in April 2026, for more information.
