Grantham Dewitt Warren, M.D.
NPI 1073583241ActiveIndividual· Obstetrics & Gynecology· Spartanburg, SC
Obstetrics & Gynecology (M.D.) in Spartanburg, South Carolina, trained at Brody School of Medicine at East Carolina University (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $36,641 for 419 claims, against $10,161 paid for services in 2024. Optumhealth Care Solutions, LLC was the largest of 3 companies reporting payments in 2025, $71.35 in all, mostly food and beverage.
Overview
| NPI | 1073583241 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 23, 2006 |
| Last updated in NPPES | Jan 14, 2021 |
| Certified by provider | Jan 14, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 26613 | SC |
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 - Obstetrics/Gynecology (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 95 |
|---|---|
| Services billed | 303 across 19 procedure codes |
| Paid by Medicare | $10,161 |
Part D prescriptions in 2024
| Prescriptions (claims) | 419 · 815 30-day fills |
|---|---|
| Patients | 98 |
| Total drug cost | $36,641 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Brody School of Medicine at East Carolina University |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Spartanburg Medical CenterSpartanburg, SC · 1,078 clinicians
Hospital affiliations
- Cherokee Medical CenterGaffney, SC
- Spartanburg Medical CenterSpartanburg, SC
- Union Medical CenterUnion, SC
Industry payments (Open Payments)
- 2025$71.35 · 4 payments from 3 companies
- 2024$292.08 · 12 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Optumhealth Care Solutions, LLC | $29.63 | 2 |
| Davol Inc. | $24.91 | 1 |
| Boston Scientific Corporation | $16.81 | 1 |
What the 2025 payments were for
- Food and Beverage$71.35 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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