Questions? Call:
1-800-562-3022, ext. 16137
or use our contact form
Mail or Fax all enrollment documentation to:
Provider Enrollment
PO Box 45562
Olympia, WA 98504-5562
Fax:  360-725-2144
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See Provider Resources including news, ProviderOne, billing, and contacts.

Before you get started

Who can become a Washington State Medicaid Provider?

Provider specific required documents

Training (manuals, E-learnings)

Become a New Provider Application Process:

Billing and servicing provider

Nonbilling provider (ordering, referring, and prescribing only) 

Now that you are a provider

Shortcut guide to Provider One (pdf) 

Apple Health (Medicaid) Provider Training

Provider Resources

ProviderOne Security (maintain file, check eligibility, submit claims, access payment)

Electronic Health Records (EHR)