Quick answers
- Does Brian W. Nielsen accept Medicare assignment?
- Yes. Medicare's clinician data says Brian W. Nielsen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Brian W. Nielsen's NPI number?
- 1851342349. 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 Brian W. Nielsen is enrolled with Medicare (CMS data updated October 2, 2026).
- 3318 N 14th StBismarck, ND 58503 (701) 323‑8300
- 414 N 7th StBismarck, ND 58501 (701) 323‑6815
Group practices
Medicare enrollment lists Brian W. Nielsen as a member of this group (CMS data updated October 2, 2026).
- Sanford Bismarck556 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Bismarck
Clinicians with the same Medicare primary specialty in Bismarck, ND — not a recommendation.
Other clinicians in Sanford Bismarck
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wayne State University School Of Medicine |
| Graduation year | 2001 (25 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1851342349 |
| 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 October 2, 2026, retrieved October 29, 2026
- 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