Gregory Griffeth, PMHNP-BC
NPI 1366253221 · Psychiatric/Mental Health Nurse Practitioner · Bozeman, MT
Gregory Griffeth, PMHNP-BC is a Psychiatric/Mental Health Nurse Practitioner provider in Bozeman, MT (NPI 1366253221).
Provider details
- NPI number
- 1366253221
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP-BC
- Sex
- Male
- Sole proprietor
- Yes
- License
- NUR-APRN-LIC-268394 (MT)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-01-18
- Last updated
- 2026-03-26
- Certified
- 2026-03-26
Frequently asked questions
- What is Gregory Griffeth's NPI number?
- Gregory Griffeth's National Provider Identifier (NPI) is 1366253221, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Griffeth's specialty?
- Gregory Griffeth is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Gregory Griffeth located?
- Gregory Griffeth's practice location on file with NPPES is 131 Whiskey Way Unit C, Bozeman, MT 59718-1192.
- What is Gregory Griffeth's phone number?
- The practice phone number listed in the NPPES registry for Gregory Griffeth is (406) 540-7235.
- Is Gregory Griffeth's NPI active?
- Yes — Gregory Griffeth's NPI (1366253221) is active in the NPPES registry as of the last update on 2026-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.