Quick answers
- Where does James B. Nelson see patients?
- Medicare's clinician data lists 1 practice location in Menomonee Falls, WI. Call before your visit to confirm the address.
- What is James B. Nelson's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does James B. Nelson accept Medicare assignment?
- Yes. Medicare's clinician data says James B. Nelson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for James B. Nelson?
- (262) 255-2500, as listed in official Medicare / NPI Registry data.
- What is James B. Nelson's NPI number?
- 1245291061. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where James B. Nelson is enrolled with Medicare (CMS data updated 2026-10-02).
- W180n8000 Town Hall RdMenomonee Falls, WI 53051 (262) 255‑2500
Group practices
Medicare enrollment lists James B. Nelson as a member of this group (CMS data updated 2026-10-02).
- Froedtert Andthe Medical College of Wisconsin Community Physicians Inc1,285 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1245291061 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians