MR. WILLIAM CASTILLO JR. LMHC, CDP
NPI 1164864971
Counselor - Mental Health in Seattle, WA

Q: What is William Castillo's NPI number?

The NPI number for William Castillo is 1164864971. It was assigned to this individual provider in the NPPES registry on July 22, 2013.

Q: What is William Castillo's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Q: When was this NPI record last updated?

The NPPES record for William Castillo was last updated on July 22, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 22, 2013

1725 ROXBURY AVENUE SW, SUITE #5, SEATTLE, WA 98106(206) 932-6638 Get Directions Write a Review

NPPES record last updated: July 22, 2013. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About Mr. William Castillo Jr. Lmhc, Cdp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. WILLIAM CASTILLO JR. LMHC, CDP (NPI 1164864971) is an individual mental health provider in Seattle, Washington, licensed in Washington (LH60208827) and active in the NPI registry since July 2013.

NPPES Registry Identity

NPI1164864971

Entity TypeIndividualMale

Primary Taxonomy101YM0800X

Provider Legal NameMR. WILLIAM CASTILLO JR.Credential: LMHC, CDP

Location Address1725 ROXBURY AVENUE SW, SUITE #5Seattle, WA 98106

Mailing Address6523 California Avenue SwSeattle, WA 98136 · (206) 919-6844

Phone(206) 932-6638

Sole ProprietorYes

Enumeration DateJuly 22, 2013

✔ NPI 1164864971 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers

Taxonomy Code101YM0800X

License✔ Licensed in WA · LH60208827

1725 ROXBURY AVENUE SW, Seattle, WA 98106

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska.Insurance ›

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Castillo's NPI number?

The NPI number for William Castillo is 1164864971. It was assigned to this individual provider in the NPPES registry on July 22, 2013.

Where is William Castillo located?

William Castillo practices at 1725 Roxbury Avenue SW Suite #5, Seattle, WA 98106. The listed phone number is (206) 932-6638.

What is William Castillo's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

What insurance does William Castillo accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list William Castillo as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William Castillo was last updated on July 22, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.