Health and Recovery Services Administration, Department of Social and Health Services

To Add a New Washington Medicaid Provider to an existing agreement

Please TYPE or PRINT clearly when submitting a Provider Application and Core Agreement along with the documents and licenses required. If we cannot read the application it will delay your enrollment.

For a successful application, please review the following information before you submit your application.

For adding a provider to an existing agreement, you need to submit the following documents:

  • Washington state law requires that you use the official Medicaid Core Provider Agreement and Provider Enrollment Application forms.
  • We do not accept Washington Practitioner Applications.

For more information on
National Provider Identifier (NPI)

Staple once, sign and mail original application to:
Provider Enrollment
PO Box 45562
Olympia, WA 98504-5562
For Questions call:
1-800-562-3022 option 2, then option 5

After you send us your Core Provider Agreement and Enrollment Application, we will review it. The review and verification process takes 4-6 weeks. Once you receive a seven-digit provider number, you are a current Washington Medicaid provider. If you have questions about your enrollment application, call 1-800-562-3022, option 2, then option 5, 7:30 am to 4:30 pm PST Monday - Friday.

REMINDER!!! Washington state law requires that you use the official Medicaid core agreement and forms. We do not accept Washington Practitioner Applications.

Do not send the following:
  • Double-sided applications.
  • FAXed applications. (We must have original signatures.)
  • Curriculum Vitae or Resumes'
  • Copies of drivers' licenses or passports

If you have questions about the enrollment process, contact us via email or call 1-800-562-3022 option 2 then option 5, 7:30 am to 4:30 pm Monday - Friday.


Page modified: November 2009       

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