Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mr. Gregory F Griffeth, PMHNP-BC

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1366253221

Mr. Gregory F Griffeth, PMHNP-BC is a Nurse Practitioner in Bozeman, Montana. Qualified in 2025, 1 year ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Montana.

Years since qualifying
1
Licensed in
MT
In the registry since
2025
What do these letters mean?
PMHNP-BC — Psychiatric-Mental Health Nurse Practitioner, Board Certified
A board-certified psychiatric nurse practitioner.

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Practice location Address checks out

131 Whiskey Way Unit C
Bozeman, MT 59718-1192
Phone: (406) 540-7235
Fax: (406) 797-1597
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence NUR-APRN-LIC-268394 (MT)

Record details

NPI number1366253221
Entity typeIndividual (Type 1)
GenderMale
Credentials PMHNP-BC
Sole proprietorYes
NPI enumeratedJanuary 18, 2025
Last updated in NPPESMarch 26, 2026
Certification dateMarch 26, 2026

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2025 (1 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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