Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John Robert Harrison, PHD

Individual provider Psychologist · NPI 1295750636

John Robert Harrison, PHD is a Clinical Psychologist in Missoula, Montana. Qualified in 1989, 37 years ago. Practices with Providence Health and Services Mt, a 358-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Montana.

Years since qualifying
37
Licensed in
MT
In the registry since
2006
Specialties on file
3
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

601 W Spruce St Ste K
Missoula, MT 59802-4047
Phone: (406) 327-3330
Fax: (406) 327-2399
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2825 Fort Missoula Rd, Missoula, MT 59804-7403 — (406) 327-4688

Specialties & licences

Clinical Neuropsychologist (primary) Taxonomy 103G00000X · Licence PSY-PSY-LIC-226 (MT)
Psychologist Taxonomy 103T00000X · Licence PSY-PSY-LIC-226 (MT)
School Psychologist Taxonomy 103TS0200X · Licence 59040 (MT)

Record details

NPI number1295750636
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedJuly 13, 2006
Last updated in NPPESApril 20, 2025
Certification dateApril 20, 2025
Mailing addressPo Box 31001-4110, Pasadena, CA 91110-4110

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1989 (37 years in practice)
Group practice Providence Health And Services Mt — 358 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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