Gregory S. Knudson, M.D.
NPI 1033284286ActiveIndividual· Urology· Delaware, OH
Urology (M.D.) in Delaware, Ohio, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $548,140 for 3,894 claims, against $182,164 paid for services in 2024. Boston Scientific Corporation was the largest of 2 companies reporting payments in 2025, $34.47 in all, mostly food and beverage.
Overview
| NPI | 1033284286 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 22, 2006 |
| Last updated in NPPES | Sep 22, 2022 |
| Certified by provider | Sep 22, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | 35.063160 | OH |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Urology (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 770 |
|---|---|
| Services billed | 10,791 across 78 procedure codes |
| Paid by Medicare | $182,164 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,894 · 9,470 30-day fills |
|---|---|
| Patients | 916 |
| Total drug cost | $548,140 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Urology |
| Telehealth | Offers telehealth |
Medical group
- Ohiohealth CorporationColumbus, OH · 2,314 clinicians
Hospital affiliations
- Dublin Methodist HospitalDublin, OH
- Grady Memorial HospitalDelaware, OH
- Grant Medical CenterColumbus, OH
- Memorial HospitalMarysville, OH
- Riverside Methodist HospitalColumbus, OH
Industry payments (Open Payments)
- 2025$34.47 · 2 payments from 2 companies
- 2024$74.47 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $20.98 | 1 |
| Pfizer Inc. | $13.49 | 1 |
What the 2025 payments were for
- Food and Beverage$34.47 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records