IndividualActive
James Day, MD
NPI 1558371948 · Psychiatry Physician · Great Falls, MT
James Day, MD is a Psychiatry Physician provider in Great Falls, MT (NPI 1558371948).
Provider details
- NPI number
- 1558371948
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 3892 (MT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs 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
915 1st Ave S
Center for Mental Health
Great Falls, MT 59401-3705
Phone: (406) 791-9550
Fax: (406) 761-2107
Street-level locationGet directions
Mailing address
162 Highland Rd
Great Falls, MT 59405-8118
Registry dates
- Enumerated
- 2006-08-08
- Last updated
- 2023-03-07
Frequently asked questions
- What is James Day's NPI number?
- James Day's National Provider Identifier (NPI) is 1558371948, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Day's specialty?
- James Day is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is James Day located?
- James Day's practice location on file with NPPES is 915 1st Ave S, Great Falls, MT 59401-3705.
- What is James Day's phone number?
- The practice phone number listed in the NPPES registry for James Day is (406) 791-9550.
- Is James Day's NPI active?
- Yes — James Day's NPI (1558371948) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.