Margaret T. Macdowell, MD
NPI 1437123288ActiveIndividual· Radiology, Radiation Oncology· Charleston, SC
Radiology, Radiation Oncology (MD) in Charleston, South Carolina, trained at Medical University of South Carolina College of Medicine (class of 1989). Mostly services rather than prescriptions: Medicare paid $64,432 for 92 patients in 2024, with only 17 Part D claims. Novartis Pharmaceuticals Corporation was the largest of 4 companies reporting payments in 2025, $117.54 in all, mostly food and beverage.
Overview
| NPI | 1437123288 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 16, 2006 |
| Last updated in NPPES | Oct 10, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | 15033 | 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 - Radiation Oncology (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 92 |
|---|---|
| Services billed | 942 across 21 procedure codes |
| Paid by Medicare | $64,432 |
Part D prescriptions in 2024
| Prescriptions (claims) | 17 · 17 30-day fills |
|---|---|
| Total drug cost | $304.23 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | Medical University of South Carolina College of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Radiation Oncology |
Medical groups
- Savannah Multispecialty Associates LLCSavannah, GA · 125 clinicians
- Coastal Carolina Multispecialty Associates LLCWalterboro, SC · 49 clinicians
Hospital affiliations
- Bon Secours-St Francis Xavier HospitalCharleston, SC
- Trident Medical CenterCharleston, SC
Industry payments (Open Payments)
- 2025$117.54 · 5 payments from 4 companies
- 2024$157.32 · 6 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $37.68 | 2 |
| Merck Sharp & Dohme LLC | $34.10 | 1 |
| Bioprotect Medical, Inc. | $31.38 | 1 |
| Tactile Systems Technology Inc | $14.38 | 1 |
What the 2025 payments were for
- Food and Beverage$117.54 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 29 radiation oncologists in Charleston · All radiation oncologists in South Carolina