Natalie K. Alphonse Sullivan, MD

Medicare activity in 2024

Official CMS public-use data for Natalie K. Alphonse Sullivan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)1,996 services
2. Ct guidance for insertion of radiation therapy fields (77014)1,454 services
3. Calculation of radiation therapy dose (77300)959 services
4. Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)873 services
5. Continuing radiation therapy consultation per week (77336)542 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure75%
• High cholesterol75%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
• Arthritis58%
• Ischemic heart disease38%
• Chronic kidney disease31%

Hospitals where Natalie K. Alphonse Sullivan works

Medicare's Facility Affiliation Data lists Natalie K. Alphonse Sullivan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• CHRISTUS St Frances Cabrini HospitalAlexandria, LA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 190019

Practice locations

Addresses where Natalie K. Alphonse Sullivan is enrolled with Medicare (CMS data updated October 2, 2026).

• 1324 Lakeland Hill BlvdLakeland, FL 33805 (863) 687‑1100
• 3330 Masonic DrAlexandria, LA 71301 (318) 448‑6917
• 605 Medical Ctr Dr, Suite AAlexandria, LA 71301 (318) 769‑7200

Group practices

Medicare enrollment lists Natalie K. Alphonse Sullivan as a member of this group (CMS data updated October 2, 2026).

• Lakeland Regional Health Systems Inc536 clinicians in the group

Specialties

• Radiation Oncologyprimary

Find other Radiation Oncology doctors in Florida →

Other radiation oncologists in Lakeland

Clinicians with the same Medicare primary specialty in Lakeland, FL — not a recommendation.

• Kris M. Guerrier, MD
• Alex S. Mirakian, MD
• David W. Graham Jr., MD
• Sandra J. Sha, MD

All radiation oncologists in Lakeland →

Other clinicians in Lakeland Regional Health Systems Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Soniya Patel, MD
• Steven M. Grieper, MD
• Jeffrey L. Williams, MD
• Felix Carrillo-Alvira, MD
• Ellen Davis, PA
• Ruben D. Adriano, MD

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians