William Spire, M.D.
NPI 1740396621 · Neurological Surgery Physician · Billings, MT
William Spire, M.D. is a Neurological Surgery Physician provider in Billings, MT (NPI 1740396621).
Provider details
- NPI number
- 1740396621
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- RT1498 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-08-22
- Last updated
- 2018-06-18
Frequently asked questions
- What is William Spire's NPI number?
- William Spire's National Provider Identifier (NPI) is 1740396621, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Spire's specialty?
- William Spire is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is William Spire located?
- William Spire's practice location on file with NPPES is 1041 N. 29th St., Billings, MT 59101.
- What is William Spire's phone number?
- The practice phone number listed in the NPPES registry for William Spire is (406) 237-5577.
- Is William Spire's NPI active?
- Yes — William Spire's NPI (1740396621) is active in the NPPES registry as of the last update on 2018-06-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.