Diana Alma Santiago, MD
NPI 1073552196ActiveIndividual· Radiology, Radiation Oncology· Newnan, GA
Radiology, Radiation Oncology (MD) in Newnan, Georgia, trained at Medical University of South Carolina College of Medicine (class of 1992). In 2024 Medicare paid $110,566 for 191 patients, and Part D covered 176 of their prescriptions, 84% of them generic. Sumitomo Pharma America, Inc. was the largest of 2 companies reporting payments in 2025, $75.25 in all, mostly food and beverage.
Overview
| NPI | 1073552196 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 5, 2006 |
| Last updated in NPPES | Dec 27, 2021 |
| Certified by provider | Dec 27, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | 42421 | GA |
| Specialist | 174400000X | 42421 | GA |
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 (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 191 |
|---|---|
| Services billed | 1,725 across 29 procedure codes |
| Paid by Medicare | $110,566 |
Part D prescriptions in 2024
| Prescriptions (claims) | 176 · 214 30-day fills |
|---|---|
| Patients | 85 |
| Total drug cost | $9,732 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Medical University of South Carolina College of Medicine |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Radiation Oncology |
Medical group
- Therapeutic Radiation Oncology, PCStockbridge, GA · 8 clinicians
Hospital affiliations
- Piedmont Fayette HospitalFayetteville, GA
- Piedmont Hospital, IncAtlanta, GA
- Piedmont Newnan Hospital, IncNewnan, GA
Industry payments (Open Payments)
- 2025$75.25 · 3 payments from 2 companies
- 2024$88.52 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sumitomo Pharma America, Inc. | $41.32 | 2 |
| Boston Scientific Corporation | $33.93 | 1 |
What the 2025 payments were for
- Food and Beverage$75.25 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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