Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mrs. Natalie Ketsia Alphonse Sullivan, MD

Individual provider Radiation Oncology Physician · NPI 1003255761

Mrs. Natalie Ketsia Alphonse Sullivan, MD practises Radiation Oncology in Alexandria, Louisiana. Graduated from Wake Forest University School of Medicine in 2013, 13 years ago. Practices with Lakeland Regional Health Systems Inc, a 503-clinician group and accepts Medicare assignment. Licensed in Florida and Louisiana.

Years since qualifying
13
Trained at
Wake Forest University School of Medicine
Licensed in
FL, LA
In the registry since
2013
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3330 Masonic Dr
Alexandria, LA 71301-3841
Phone: (318) 448-6917
Fax: (225) 286-7917
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence ME148133 (FL)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence 344149 (LA)

Record details

NPI number1003255761
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 17, 2013
Last updated in NPPESFebruary 12, 2026
Certification dateFebruary 12, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyRADIATION ONCOLOGY
Medical schoolWAKE FOREST UNIVERSITY SCHOOL OF MEDICINE
Graduated 2013 (13 years in practice)
Group practice Lakeland Regional Health Systems Inc — 503 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients383
Services billed 8,399 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $301 13 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Rapides Regional Medical Center Hospital · Alexandria, LA
  • Christus St Frances Cabrini Hospital Hospital · Alexandria, LA
  • Lagniappe Homecare Alexandria Home health agency · Alexandria, LA
  • Allegiance Healthcare, Llc Hospice · Leesville, LA

Also affiliated with 1 hospice, which CMS identifies by certification number only.

Colleagues at Lakeland Regional Health Systems Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 503 clinicians in the practice; 12 are shown here.

Other providers in Alexandria