William M. Merritt, MD
NPI 1609070143ActiveIndividual· Obstetrics & Gynecology, Gynecologic Oncology· Columbia, SC
Obstetrics & Gynecology, Gynecologic Oncology (MD) in Columbia, South Carolina, trained at University of South Carolina School of Medicine (class of 2001). In 2024 Medicare paid $2,251,863 for 510 patients, and Part D covered 688 of their prescriptions, 79% of them generic. Astrazeneca Pharmaceuticals LP was the largest of 33 companies reporting payments in 2025, $1,811 in all, mostly food and beverage.
Overview
| NPI | 1609070143 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 11, 2007 |
| Last updated in NPPES | Aug 5, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology, Gynecologic Oncology Primary | 207VX0201X | M6290 | TX |
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 - Gynecological Oncology (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 510 |
|---|---|
| Services billed | 176,137 across 144 procedure codes |
| Paid by Medicare | $2,251,863 |
Part D prescriptions in 2024
| Prescriptions (claims) | 688 · 743 30-day fills |
|---|---|
| Patients | 181 |
| Total drug cost | $1,480,247 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | University of South Carolina School of Medicine |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Gynecological Oncology |
Medical group
- South Carolina Oncology Assoc PAColumbia, SC · 18 clinicians
Hospital affiliations
- Lexington Medical CenterWest Columbia, SC
- Musc Health Columbia Medical Center DowntownColumbia, SC
- Prisma Health BaptistColumbia, SC
- Prisma Health Richland HospitalColumbia, SC
- Prisma Health Tuomey HospitalSumter, SC
Other facilities
- Medical Services of America Home HealthHome health agency · Irmo, SC
Industry payments (Open Payments)
- 2025$1,811 · 81 payments from 33 companies
- 2024$1,649 · 77 payments from 31 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $239.98 | 12 |
| Novartis Pharmaceuticals Corporation | $220.53 | 9 |
| Abbvie Inc. | $143.47 | 5 |
| Coopersurgical, Inc. | $106.90 | 1 |
| Pfizer Inc. | $82.96 | 4 |
What the 2025 payments were for
- Food and Beverage$1,811 · 81 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Obstetrics & Gynecology, Gynecologic Oncology providers in Columbia
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All Obstetrics & Gynecology, Gynecologic Oncology providers in South Carolina