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DR. WILLIAM ARL HAHNSTADT PH.D.
NPI 1659442804
Psychologist - Rehabilitation in Missoula, MT

Active since November 10, 2006
4850 SPURGIN RD, MISSOULA, MT 59804(406) 549-9475 Get Directions Write a Review

NPPES record last updated: August 24, 2020. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. William Arl Hahnstadt Ph.d. NPPES

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

DR. WILLIAM ARL HAHNSTADT PH.D. (NPI 1659442804) is an individual rehabilitation provider in Missoula, Montana, licensed in Montana (171) and active in the NPI registry since November 2006.

NPPES Registry Identity

NPI1659442804
Entity TypeIndividualMale
Primary Taxonomy103TR0400X
Provider Legal NameDR. WILLIAM ARL HAHNSTADTCredential: PH.D.
Location Address4850 SPURGIN RDMissoula, MT 59804-4510
Mailing Address4850 Spurgin RdMissoula, MT 59804-4510 · (406) 549-9475
Phone(406) 549-9475
Sole ProprietorYes
Enumeration DateNovember 10, 2006
Last NPPES UpdateAugust 24, 2020
NPPES CertifiedAugust 24, 2020
✔ NPI 1659442804 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · RehabilitationBehavioral Health & Social Service Providers
Taxonomy Code103TR0400X
License✔ Licensed in MT · 171
Definition
A psychologist who specializes in the study and application of psychological principles on behalf of persons who have disability due to injury or illness. Rehabilitation psychologists, often within teams, assess and treat cognitive, emotional, and functional difficulties, and help people to overcome barriers to participation in life activities. Rehabilitation psychologists are involved in practice, research, and advocacy, with the broad goal of fostering independence and opportunity for people with disabilities.
4850 SPURGIN RD, Missoula, MT 59804
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Other Identifiers 1

Medicaid0492999MT

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 Hahnstadt's NPI number?

The NPI number for William Hahnstadt is 1659442804. It was assigned to this individual provider in the NPPES registry on November 10, 2006.

Where is William Hahnstadt located?

William Hahnstadt practices at 4850 Spurgin Rd, Missoula, MT 59804. The listed phone number is (406) 549-9475.

What is William Hahnstadt's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Rehabilitation, with taxonomy code 103TR0400X.

When was this NPI record last updated?

The NPPES record for William Hahnstadt was last updated on August 24, 2020. NPI Profile syncs with the weekly NPPES data releases published by CMS.