Leonid Zamdborg, M.D., PH.D
NPI 1467899534ActiveIndividual· Radiology, Radiation Oncology· Columbia, SC
Radiology, Radiation Oncology (M.D., PH.D) with South Carolina Oncology Assoc PA, practicing in Columbia, South Carolina. 356 Medicare patients in 2024, $1,120,186 paid; nearly all of their 207 Part D prescriptions were generic (93%). Astrazeneca Pharmaceuticals LP was the largest of 39 companies reporting payments in 2025, $2,364 in all, mostly food and beverage.
Overview
| NPI | 1467899534 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D., PH.D |
| Sole proprietor | No |
| NPI issued | May 30, 2013 |
| Last updated in NPPES | Jun 11, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | 52455 | SC |
| Radiology, Radiation Oncology | 2085R0001X | 4301102835 | MI |
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 | 356 |
|---|---|
| Services billed | 10,493 across 80 procedure codes |
| Paid by Medicare | $1,120,186 |
Part D prescriptions in 2024
| Prescriptions (claims) | 207 · 349 30-day fills |
|---|---|
| Patients | 99 |
| Total drug cost | $15,040 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Radiation Oncology |
Medical group
- South Carolina Oncology Assoc PAColumbia, SC · 18 clinicians
Industry payments (Open Payments)
- 2025$2,364 · 106 payments from 39 companies
- 2024$1,973 · 78 payments from 33 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $232.67 | 12 |
| Novartis Pharmaceuticals Corporation | $220.53 | 9 |
| Janssen Biotech, Inc. | $178.80 | 8 |
| Genentech USA, Inc. | $143.96 | 6 |
| Merck Sharp & Dohme LLC | $134.66 | 5 |
What the 2025 payments were for
- Food and Beverage$2,364 · 106 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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