Nathaniel James Stewart, M.D.
NPI 1225064017ActiveIndividual· Orthopaedic Surgery· Altoona, WI
Orthopaedic Surgery (M.D.) in Altoona, Wisconsin, trained at University of Minnesota Medical School (class of 1992). 398 Medicare patients in 2024, $152,996 paid; all of their 421 Part D prescriptions were generic. Stryker Corporation was the largest of 3 companies reporting payments in 2025, $661.15 in all, mostly food and beverage.
Overview
| NPI | 1225064017 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 23, 2006 |
| Last updated in NPPES | Jun 5, 2026 |
| Certified by provider | Jun 5, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | 39520 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Orthopedic Surgery (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 398 |
|---|---|
| Services billed | 2,267 across 61 procedure codes |
| Paid by Medicare | $152,996 |
Part D prescriptions in 2024
| Prescriptions (claims) | 421 · 441 30-day fills |
|---|---|
| Patients | 247 |
| Total drug cost | $4,014 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | University of Minnesota Medical School |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Orthopedic Surgery |
Medical groups
- Advantage Physical Therapy and Sports Rehab, LLCKenosha, WI · 294 clinicians
- Chippewa Valley Orthopedics and Sports Medicine Clinic SCRice Lake, WI · 32 clinicians
Hospital affiliations
- Aspirus Medford Hospital & Clinics, IncMedford, WI
- Aspirus Stanley HospitalStanley, WI
- Cumberland Memorial HospitalCumberland, WI
- Marshfield Medical Center - Eau ClaireEau Claire, WI
- Oakleaf Surgical HospitalAltoona, WI
Industry payments (Open Payments)
- 2025$661.15 · 12 payments from 3 companies
- 2024$7,337 · 12 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $367.29 | 9 |
| Depuy Synthes Sales Inc. | $233.89 | 2 |
| Becton, Dickinson and Company | $59.97 | 1 |
What the 2025 payments were for
- Food and Beverage$661.15 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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