Gregory McMahon, D.O.
NPI 1295116218ActiveIndividual· Urology· Wynnewood, PA
Urology (D.O.) in Wynnewood, Pennsylvania, trained at Philadelphia College of Osteopathic Medicine (class of 2015). Their prescriptions cost Medicare Part D more than their services did: $4,596,600 for 2,088 claims, against $246,531 paid for services in 2024. Janssen Biotech, Inc. was the largest of 34 companies reporting payments in 2025, $55,884 in all, mostly consulting fees.
Overview
| NPI | 1295116218 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Jun 16, 2015 |
| Last updated in NPPES | Jan 16, 2023 |
| Certified by provider | Jan 16, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | 64741 | CT |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 858 |
|---|---|
| Services billed | 6,013 across 88 procedure codes |
| Paid by Medicare | $246,531 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,088 · 3,906 30-day fills |
|---|---|
| Patients | 492 |
| Total drug cost | $4,596,600 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | Philadelphia College of Osteopathic Medicine |
|---|---|
| Graduation year | 2015 |
| Medicare specialty | Urology |
| Telehealth | Offers telehealth |
Medical group
- The Centers for Advanced Urology LLPWest Chester, PA · 145 clinicians
Hospital affiliations
- Bryn Mawr HospitalBryn Mawr, PA
- Chester County HospitalWest Chester, PA
- Main Line Hospital LankenauWynnewood, PA
- Paoli HospitalPaoli, PA
- Riddle Memorial HospitalMedia, PA
Industry payments (Open Payments)
- 2025$55,884 · 180 payments from 34 companies
- 2024$18,449 · 121 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $36,354 | 74 |
| Janssen Scientific Affairs, LLC | $8,162 | 5 |
| Ferring Pharmaceuticals Inc. | $4,768 | 9 |
| Astrazeneca Pharmaceuticals LP | $1,561 | 9 |
| Bayer Healthcare Pharmaceuticals Inc. | $1,352 | 16 |
What the 2025 payments were for
- Consulting Fee$26,482 · 10 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$20,828 · 13 payments
- Food and Beverage$4,898 · 142 payments
- Travel and Lodging$3,641 · 14 payments
- Education$35.06 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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