James Stephen, MD
NPI 1821009911 · General Practice Physician · Buffalo, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Stephen, MD is a General Practice Physician provider in Buffalo, NY (NPI 1821009911).
Provider details
- NPI number
- 1821009911
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 91017 (SC)
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
2 documented practice locations
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
Additional practice locations (1)
- 1595 Bailey AveBuffalo, NY 14212-2008Phone: (716) 893-8550Fax: (716) 893-4020
Registry dates
- Enumerated
- 2006-08-11
- Last updated
- 2026-01-08
- Certified
- 2026-01-08
Frequently asked questions
- What is James Stephen's NPI number?
- James Stephen's National Provider Identifier (NPI) is 1821009911, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Stephen's specialty?
- James Stephen is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is James Stephen located?
- James Stephen's practice location on file with NPPES is 701 Seneca St Ste 646c, Buffalo, NY 14210-1351.
- What is James Stephen's phone number?
- The practice phone number listed in the NPPES registry for James Stephen is (716) 995-4450.
- Does James Stephen accept Medicare?
- James Stephen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Stephen's NPI active?
- Yes — James Stephen's NPI (1821009911) is active in the NPPES registry as of the last update on 2026-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.