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MICHAEL SCOTT GRIERSON
NPI 1972462265
Social Worker - Clinical in Seattle, WA

Active since January 21, 2026
325 9TH AVE, BOX 359797, SEATTLE, WA 98104(206) 744-9603(206) 744-9914 Get Directions Write a Review

NPPES record last updated: January 21, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About Michael Scott Grierson NPPES

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

MICHAEL SCOTT GRIERSON (NPI 1972462265) is an individual clinical provider in Seattle, Washington, licensed in Washington (SWIA.SC.61663907) and active in the NPI registry since January 2026.

NPPES Registry Identity

NPI1972462265
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMICHAEL SCOTT GRIERSON
Location Address325 9TH AVE, BOX 359797Seattle, WA 98104-4299
Mailing Address325 9th Ave, Box 359797Seattle, WA 98104-4299 · (206) 744-9603 · Fax (206) 744-9914
Phone(206) 744-9603
Fax(206) 744-9914
Sole ProprietorNo
Enumeration DateJanuary 21, 2026
NPPES CertifiedJanuary 21, 2026
✔ NPI 1972462265 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in WA · SWIA.SC.61663907
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
325 9TH AVE, Seattle, WA 98104
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Other Providers at the Same Location NPPES 20

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

SANDRA K WALKER ARNP
Nurse Practitioner (Acute Care)
325 9TH AVE
SEATTLE, WA 98104
King County (206) 598-0502
JULIA J VISSER DPT
Physical Therapist
325 9TH AVE, BOX 359920
SEATTLE, WA 98104
King County (206) 744-1675
GENIA J MONCADA
Pharmacist
325 9TH AVE, MAILSTOP 359912
SEATTLE, WA 98104
King County (206) 731-3219
JACQUELINE M. KIM LICSW, MSW
Social Worker (Clinical)
325 9TH AVE, BOX 359760
SEATTLE, WA 98104
King County (206) 744-8511
MS. DIANE E WHEELER MS, PA-C
Physician Assistant (Medical)
325 9TH AVE
SEATTLE, WA 98104
King County (206) 744-3000
AMELIA V. RIVERA
Physical Therapist
325 9TH AVE
SEATTLE, WA 98104
King County (206) 774-3300
TIMOTHY WILLIAM MENZA MD, PHD
Internal Medicine (Infectious Disease)
325 9TH AVE
SEATTLE, WA 98104
King County (206) 520-5000
DEMETRIOS TEREZAKIS
Occupational Therapist
325 9TH AVE
SEATTLE, WA 98104
King County (206) 744-6112

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 Michael Grierson's NPI number?

The NPI number for Michael Grierson is 1972462265. It was assigned to this individual provider in the NPPES registry on January 21, 2026.

Where is Michael Grierson located?

Michael Grierson practices at 325 9th Ave Box 359797, Seattle, WA 98104. The listed phone number is (206) 744-9603.

What is Michael Grierson's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

When was this NPI record last updated?

The NPPES record for Michael Grierson was last updated on January 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.