Quick answers
- Does Warren W. Nielsen accept Medicare assignment?
- Medicare's clinician data says Warren W. Nielsen may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- What is Warren W. Nielsen's NPI number?
- 1134682966. 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 Warren W. Nielsen is enrolled with Medicare (CMS data updated October 2, 2026).
- 2909 W 50th StMinneapolis, MN 55410
- 3500 American Blvd W, Suite 300Bloomington, MN 55431
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Minneapolis
Clinicians with the same Medicare primary specialty in Minneapolis, MN — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Oregon Health Sciences University School Of Medicine |
| Graduation year | 2021 (5 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1134682966 |
| 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