Mary Gaddy, MD
NPI 1982716551 · Neurology Physician · Billings, MT
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Gaddy, MD is a Neurology Physician provider in Billings, MT (NPI 1982716551).
Provider details
- NPI number
- 1982716551
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 6313 (MT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-08-31
- Last updated
- 2022-02-22
- Certified
- 2022-02-22
Frequently asked questions
- What is Mary Gaddy's NPI number?
- Mary Gaddy's National Provider Identifier (NPI) is 1982716551, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Gaddy's specialty?
- Mary Gaddy is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Gaddy located?
- Mary Gaddy's practice location on file with NPPES is 801 N 29th St, Billings, MT 59101-0905.
- What is Mary Gaddy's phone number?
- The practice phone number listed in the NPPES registry for Mary Gaddy is (406) 238-2500.
- Does Mary Gaddy accept Medicare?
- Mary Gaddy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Gaddy's NPI active?
- Yes — Mary Gaddy's NPI (1982716551) is active in the NPPES registry as of the last update on 2022-02-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.