JAY C WILLIAMSON M.A.
NPI 1417150491
Counselor - Mental Health in Bellevue, WA

Q: What is Jay Williamson's NPI number?

The NPI number for Jay Williamson is 1417150491. It was assigned to this individual provider in the NPPES registry on June 7, 2007.

Q: What is Jay Williamson'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 Jay Williamson was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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 June 07, 2007

13606 NE 20TH ST, SUITE 104, BELLEVUE, WA 98005(425) 643-2383(425) 795-7143 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Jay C Williamson M.a. NPPES

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

JAY C WILLIAMSON M.A. (NPI 1417150491) is an individual mental health provider in Bellevue, Washington, licensed in Washington (LH00005269) and active in the NPI registry since June 2007.

NPPES Registry Identity

NPI1417150491

Entity TypeIndividualMale

Primary Taxonomy101YM0800X

Provider Legal NameJAY C WILLIAMSONCredential: M.A.

Location Address13606 NE 20TH ST, SUITE 104Bellevue, WA 98005-2011

Mailing Address13606 Ne 20th St, Suite 104Bellevue, WA 98005-2011 · (425) 643-2383 · Fax (425) 795-7143

Phone(425) 643-2383

Fax(425) 795-7143

Sole ProprietorYes

Enumeration DateJune 7, 2007

Last NPPES UpdateSeptember 11, 2025

✔ NPI 1417150491 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers

Taxonomy Code101YM0800X

License✔ Licensed in WA · LH00005269

Also ListedMarriage & Family TherapistTaxonomy 106H00000X · License LF00001189 (WA)

13606 NE 20TH ST, Bellevue, WA 98005

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Other Identifiers 1

OtherWI3773WA · Pin

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MADISON ANN PARKS MA, LMFTA

Marriage & Family Therapist

13606 NE 20TH ST
BELLEVUE, WA 98005

King County (425) 610-6586

DOUG BARTHOLOMEW MS INC.

Clinic/Center (Adult Mental Health)

13606 NE 20TH ST, #200
BELLEVUE, WA 98005

King County (425) 635-0188

MS. MARY L WOODWARD LMP

Specialist

13606 NE 20TH ST, STE. 307
BELLEVUE, WA 98005

King County (425) 985-0882

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 Jay Williamson's NPI number?

The NPI number for Jay Williamson is 1417150491. It was assigned to this individual provider in the NPPES registry on June 7, 2007.

Where is Jay Williamson located?

Jay Williamson practices at 13606 NE 20th St Suite 104, Bellevue, WA 98005. The listed phone number is (425) 643-2383.

What is Jay Williamson's specialty?

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

When was this NPI record last updated?

The NPPES record for Jay Williamson was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.