William Merriam, M.D.
NPI 1912043258ActiveIndividual· Urology· West Chester, PA
Urology (M.D.) with The Centers for Advanced Urology LLP, practicing in West Chester, Pennsylvania. Their prescriptions cost Medicare Part D more than their services did: $2,247,183 for 2,490 claims, against $258,930 paid for services in 2024. Procept Biorobotics Corporation was the largest of 21 companies reporting payments in 2025, $2,508 in all, mostly food and beverage. Lists Bryn Mawr Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1912043258 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 30, 2007 |
| Last updated in NPPES | Oct 21, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | MD427453 | PA |
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 (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,147 |
|---|---|
| Services billed | 8,305 across 76 procedure codes |
| Paid by Medicare | $258,930 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,490 · 4,989 30-day fills |
|---|---|
| Patients | 569 |
| Total drug cost | $2,247,183 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 2007 |
|---|---|
| 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
- Hospital of Univ of PennsylvaniaPhiladelphia, PA
- Lancaster General HospitalLancaster, PA
- Paoli HospitalPaoli, PA
Industry payments (Open Payments)
- 2025$2,508 · 60 payments from 21 companies
- 2024$1,834 · 58 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Procept Biorobotics Corporation | $1,115 | 9 |
| Pfizer Inc. | $169.51 | 8 |
| Immunitybio, Inc. | $168.24 | 3 |
| Janssen Biotech, Inc. | $144.41 | 5 |
| Dendreon Pharmaceuticals LLC | $129.86 | 1 |
What the 2025 payments were for
- Food and Beverage$1,675 · 55 payments
- Travel and Lodging$797.04 · 4 payments
- Education$35.06 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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