John Duncan, MD
NPI 1932186632 · Neurological Surgery Physician · Barrington, RI
Enrolled with Medicare as Practitioner - Neurosurgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Duncan, MD is a Neurological Surgery Physician provider in Barrington, RI (NPI 1932186632).
Provider details
- NPI number
- 1932186632
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD08811 (RI)
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
- 2005-12-23
- Last updated
- 2022-02-11
Frequently asked questions
- What is John Duncan's NPI number?
- John Duncan's National Provider Identifier (NPI) is 1932186632, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Duncan's specialty?
- John Duncan is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is John Duncan located?
- John Duncan's practice location on file with NPPES is 5 Spindrift Way, Barrington, RI 02806-5034.
- What is John Duncan's phone number?
- The practice phone number listed in the NPPES registry for John Duncan is (401) 245-7146.
- Does John Duncan accept Medicare?
- John Duncan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Duncan's NPI active?
- Yes — John Duncan's NPI (1932186632) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.