Washington Apple Health (HCA, ProviderOne)

Credentialing and enrollment

Track practice enrollment, network contracts and provider-directory changes through the correct administrative team.

provider enrollment credentialing

Provider enrollment/revalidation (ext 16137)

Official page read

Phone800-562-3022 ext. 16137

Apple Health provider enrollment and revalidation at extension 16137 of the shared HCA phone.

Published hours

Tue/Thu 7:30am–noon and 1pm–4:30pm; closed Mon/Wed/Fri. The enrollment section does not state a time zone.

Product, plan and location

medicaid
Washington

Mailing address

Not researched for this route

Use extension 16137 for provider enrollment/revalidation. The current enrollment section publishes a noon–1pm phone closure and links the HCA support portal. Adjacent billing/claims, security and general-provider phone schedules and emails are separate; their time-zone labels are not applied to this enrollment schedule.

View source ↗ · Source checked 2026-10-22 · HCA support portal linked from provider enrollment ↗

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Call preparation · editorial guide

Make the call count.

Track practice enrollment, network contracts and provider-directory changes through the correct administrative team.

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Individual and group NPIs
Application reference, location and requested network
Submission dates and outstanding checklist

Questions to resolve

Was the application accepted as complete?
Are contracting and credentialing at different stages?
What effective date is confirmed in writing?

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