Natalie Ketsia Alphonse Sullivan, M.D.
NPI 1003255761ActiveIndividual· Radiology, Radiation Oncology· Alexandria, LA
Radiology, Radiation Oncology (M.D.) in Alexandria, Louisiana, trained at Wake Forest University School of Medicine (class of 2013). In 2024 Medicare paid $1,359,393 for 383 patients, and Part D covered 273 of their prescriptions, 82% of them generic. Astellas Pharma US Inc was the largest of 9 companies reporting payments in 2025, $301.42 in all, mostly food and beverage.
Overview
| NPI | 1003255761 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 17, 2013 |
| Last updated in NPPES | Feb 12, 2026 |
| Certified by provider | Feb 12, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | ME148133 | FL |
| Radiology, Radiation Oncology | 2085R0001X | 344149 | LA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Radiation Oncology (FL); Practitioner - Radiation Oncology (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 383 |
|---|---|
| Services billed | 8,399 across 40 procedure codes |
| Paid by Medicare | $1,359,393 |
Part D prescriptions in 2024
| Prescriptions (claims) | 273 · 331 30-day fills |
|---|---|
| Patients | 129 |
| Total drug cost | $51,712 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Wake Forest University School of Medicine |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Radiation Oncology |
Medical group
- Lakeland Regional Health Systems IncLakeland, FL · 536 clinicians
Hospital affiliation
- Christus St Frances Cabrini HospitalAlexandria, LA
Other facilities
- Lagniappe Homecare AlexandriaHome health agency · Alexandria, LA
- Allegiance Healthcare, LLCHospice · Leesville, LA
Industry payments (Open Payments)
- 2025$301.42 · 13 payments from 9 companies
- 2024$88.88 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $49.64 | 2 |
| Teleflex LLC | $41.73 | 1 |
| Aveo Pharmaceuticals, Inc. | $40.51 | 2 |
| Genentech USA, Inc. | $39.50 | 2 |
| Merck Sharp & Dohme LLC | $35.60 | 2 |
What the 2025 payments were for
- Food and Beverage$301.42 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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