Nathan D. Grunewald
NPI 1396044509ActiveIndividual· Urology· Prairie Du Sac, WI
Urology in Prairie Du Sac, Wisconsin, trained at Medical College of Wisconsin (class of 2011). In 2024 Medicare paid $34,217 for 235 patients, and Part D covered 372 of their prescriptions, 88% of them generic. Cook Medical LLC reported $187.75 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1396044509 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Mar 28, 2011 |
| Last updated in NPPES | Mar 24, 2021 |
| Certified by provider | Mar 24, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | 57602-20 | 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 - Urology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 235 |
|---|---|
| Services billed | 577 across 49 procedure codes |
| Paid by Medicare | $34,217 |
Part D prescriptions in 2024
| Prescriptions (claims) | 372 · 740 30-day fills |
|---|---|
| Patients | 123 |
| Total drug cost | $30,282 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Urology |
| Telehealth | Offers telehealth |
Medical group
- Sauk Prairie Healthcare IncMazomanie, WI · 124 clinicians
Hospital affiliations
- Sauk Prairie HospitalPrairie Du Sac, WI
- Ssm Health St Clare Hospital - BarabooBaraboo, WI
- University of Wi Hospitals & Clinics AuthorityMadison, WI
Industry payments (Open Payments)
- 2025$187.75 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Cook Medical LLC | $187.75 | 1 |
What the 2025 payments were for
- Food and Beverage$187.75 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records