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

John Hamilton, PHD

Individual provider Psychologist · NPI 1275838161

John Hamilton, PHD is a Psychologist in Great Falls, Montana. Practices as a sole proprietor. Licensed in Montana.

Licensed in
MT
In the registry since
2011
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

400 15th Ave S
Great Falls, MT 59405
Phone: (406) 731-8888
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 2580 (MT)

Record details

NPI number1275838161
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJanuary 24, 2011
Last updated in NPPESApril 8, 2024
Certification dateApril 8, 2024
Mailing address400 15th Ave S, Great Falls, MT 59405-4375

Other providers in Great Falls