Gregory M. Knorr, MD
NPI 1053317305ActiveIndividual· Internal Medicine· La Crosse, WI
Internal Medicine (MD) in La Crosse, Wisconsin, trained at Medical College of Wisconsin (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $62,967 for 493 claims, against $32,300 paid for services in 2024.
Overview
| NPI | 1053317305 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 22, 2005 |
| Last updated in NPPES | Dec 1, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 43698 | 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 - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 177 |
|---|---|
| Services billed | 487 across 13 procedure codes |
| Paid by Medicare | $32,300 |
Part D prescriptions in 2024
| Prescriptions (claims) | 493 · 646 30-day fills |
|---|---|
| Patients | 79 |
| Total drug cost | $62,967 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Internal Medicine |
Medical group
- Gundersen Lutheran Medical Center IncLa Crosse, WI · 895 clinicians
Hospital affiliations
- Crossing Rivers Health Medical CenterPrairie Du Chien, WI
- Gundersen Lutheran Medical CenterLa Crosse, WI
- Tomah Memorial HospitalTomah, WI
- WinnmedDecorah, IA
- Winona Health ServicesWinona, MN
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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All 114 internal medicine physicians in La Crosse · All internal medicine physicians in Wisconsin