Quick answers
- Which hospitals does Michael J. Nielsen work at?
- Medicare's official clinician data lists Michael J. Nielsen at 1 hospital: Marshfield Medical Center - Beaver Dam (MMC-BD). This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael J. Nielsen see patients?
- Medicare's clinician data lists 4 practice locations, including Madison, WI and Beaver Dam, WI. Call before your visit to confirm the address.
- What is Michael J. Nielsen's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Michael J. Nielsen accept Medicare assignment?
- Yes. Medicare's clinician data says Michael J. Nielsen 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 Michael J. Nielsen?
- (608) 263-6400, as listed in official Medicare / NPI Registry data.
- What is Michael J. Nielsen's NPI number?
- 1578794897. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael J. Nielsen works
Medicare's Facility Affiliation Data lists Michael J. Nielsen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Marshfield Medical Center - Beaver Dam (MMC-BD)Beaver Dam, WI · Acute Care Hospital · CCN 520076
Practice locations
Addresses where Michael J. Nielsen is enrolled with Medicare (CMS data updated 2026-10-02).
- 2402 Winnebago StMadison, WI 53704
- 600 Highland AveMadison, WI 53792 (608) 263‑6400
- 707 S University AveBeaver Dam, WI 53916 (954) 939‑5000
- 7102 Mineral Point RdMadison, WI 53717 (608) 828‑7603
Group practices
Medicare enrollment lists Michael J. Nielsen as a member of these groups (CMS data updated 2026-10-02).
- University of Wisconsin Medical Foundation Inc2,553 clinicians in the group
- Ihc Beaver Dam Emergency Physicians, LLC22 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Madison
Clinicians with the same Medicare primary specialty in Madison, WI — not a recommendation.
Clinician information
| Graduation year | 2009 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1578794897 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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