DR. KATHERINE PERRY BLUMSTEIN PHD
NPI 1174484323
Psychologist - Clinical in Mercer Island, WA

Q: What is Katherine Blumstein's NPI number?

The NPI number for Katherine Blumstein is 1174484323. It was assigned to this individual provider in the NPPES registry on November 18, 2025.

Q: What is Katherine Blumstein's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Active since November 18, 2025

8241 SE 30TH ST, MERCER ISLAND, WA 98040(206) 465-9657 Get Directions Write a Review

NPPES record last updated: November 18, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. Katherine Perry Blumstein Phd NPPES

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

DR. KATHERINE PERRY BLUMSTEIN PHD (NPI 1174484323) is an individual clinical provider in Mercer Island, Washington, licensed in Washington (PY61434956) and active in the NPI registry since November 2025.

NPPES Registry Identity

NPI1174484323

Entity TypeIndividualFemale

Primary Taxonomy103TC0700X

Provider Legal NameDR. KATHERINE PERRY BLUMSTEINCredential: PHD

Location Address8241 SE 30TH STMercer Island, WA 98040-3005

Mailing Address8241 Se 30th StMercer Island, WA 98040-3005 · (206) 465-9657

Phone(206) 465-9657

Sole ProprietorYes

Enumeration DateNovember 18, 2025

NPPES CertifiedNovember 18, 2025

✔ NPI 1174484323 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in WA · PY61434956

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

8241 SE 30TH ST, Mercer Island, WA 98040

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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 Katherine Blumstein's NPI number?

The NPI number for Katherine Blumstein is 1174484323. It was assigned to this individual provider in the NPPES registry on November 18, 2025.

Where is Katherine Blumstein located?

Katherine Blumstein practices at 8241 SE 30th St, Mercer Island, WA 98040. The listed phone number is (206) 465-9657.

What is Katherine Blumstein's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

When was this NPI record last updated?

The NPPES record for Katherine Blumstein was last updated on November 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.