IndividualActive
Sinclair Armstrong, MD
NPI 1861435752 · Urology Physician · Fort Smith, AR
Sinclair Armstrong, MD is a Urology Physician provider in Fort Smith, AR (NPI 1861435752).
Provider details
- NPI number
- 1861435752
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- R-2359 (AR)
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
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
7001 Rogers Ave
Fort Smith, AR 72903-4073
Phone: (479) 452-2077
Street-level locationGet directions
Mailing address
Po Box 3528
Fort Smith, AR 72913-3528
Registry dates
- Enumerated
- 2006-06-14
- Last updated
- 2007-07-08
Frequently asked questions
- What is Sinclair Armstrong's NPI number?
- Sinclair Armstrong's National Provider Identifier (NPI) is 1861435752, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sinclair Armstrong's specialty?
- Sinclair Armstrong is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is Sinclair Armstrong located?
- Sinclair Armstrong's practice location on file with NPPES is 7001 Rogers Ave, Fort Smith, AR 72903-4073.
- What is Sinclair Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Sinclair Armstrong is (479) 452-2077.
- Is Sinclair Armstrong's NPI active?
- Yes — Sinclair Armstrong's NPI (1861435752) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.