Nathan C. Grunwald, MD
NPI 1073549887ActiveIndividual· Family Medicine· Menasha, WI
Family Medicine (MD) in Menasha, Wisconsin, trained at Medical College of Wisconsin (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $526,187 for 7,014 claims, against $49,300 paid for services in 2024.
Overview
| NPI | 1073549887 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 23, 2006 |
| Last updated in NPPES | Mar 13, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 47609-020 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 156 |
|---|---|
| Services billed | 1,395 across 72 procedure codes |
| Paid by Medicare | $49,300 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,014 · 17,692 30-day fills |
|---|---|
| Patients | 532 |
| Total drug cost | $526,187 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Thedacare, IncorporatedWaupaca, WI · 647 clinicians
Hospital affiliations
- Thedacare Regional Med Ctr - NeenahNeenah, WI
- Thedacare Regional Medical Center - Appleton IncAppleton, WI
Other facilities
- Thedacare at HomeHospice · Appleton, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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