James Nelson, MD
NPI 1245291061 · Gastroenterology Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Nelson, MD is a Gastroenterology Physician provider in Milwaukee, WI (NPI 1245291061).
Provider details
- NPI number
- 1245291061
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 37286 (WI)
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
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)
- 7901 S 6th StOak Creek, WI 53154-2010Phone: (414) 346-8000Fax: (414) 346-8010
Registry dates
- Enumerated
- 2006-03-31
- Last updated
- 2023-01-31
- Certified
- 2023-01-31
Frequently asked questions
- What is James Nelson's NPI number?
- James Nelson's National Provider Identifier (NPI) is 1245291061, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Nelson's specialty?
- James Nelson is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is James Nelson located?
- James Nelson's practice location on file with NPPES is 9200 W Wisconsin Ave, Milwaukee, WI 53226-3522.
- What is James Nelson's phone number?
- The practice phone number listed in the NPPES registry for James Nelson is (414) 805-3310.
- Does James Nelson accept Medicare?
- James Nelson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Nelson's NPI active?
- Yes — James Nelson's NPI (1245291061) is active in the NPPES registry as of the last update on 2023-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.