Dr. Natalie Ketsia Alphonse Sullivan, MD

  • Alexandria, LA
  • Radiation oncologist
NPI1003255761PAC ID2961816137
Medicare services, 2024
8,315
Medicare patients, 2024
383
Part D claims, 2024
273
MIPS score, 2024
75
Hospital affiliations
3
Practice address
3330 Masonic Drive, Alexandria, LA 71301
Practice phone
Call (318) 487-1122
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

CHRISTUS St. Frances Cabrini Hospital

Hospital · Alexandria, Louisiana

See all 9 affiliations

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Dr. Natalie Ketsia Alphonse Sullivan is a radiation oncologist in Alexandria, Louisiana

Dr. Alphonse Sullivan practices at CHRISTUS St. Frances Cabrini Hospital in Alexandria, Louisiana, part of CHRISTUS Health.

Dr. Alphonse Sullivan's NPI, 1003255761, was assigned on June 17, 2013. Dr. Alphonse Sullivan graduated from Wake Forest University School of Medicine in 2013. Dr. Alphonse Sullivan holds Florida license ME148133.

NPI and contact details
Medicare PAC ID
2961816137
NPI enumeration date
June 17, 2013
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(318) 487-1122
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Female
Estimated age
39
Medical school graduation
2013

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Natalie Ketsia Alphonse Sullivan practices at CHRISTUS St. Frances Cabrini Hospital in Alexandria, Louisiana

Dr. Alphonse Sullivan's primary practice is CHRISTUS St. Frances Cabrini Hospital, at 3330 Masonic Drive, Alexandria, LA 71301 in Rapides Parish. The practice phone is (318) 487-1122.

Source: Dmand AI Affiliation Data

Dr. Natalie Ketsia Alphonse Sullivan is affiliated with 6 sites of care and 3 medical groups

Dr. Alphonse Sullivan's primary practice is CHRISTUS St. Frances Cabrini Hospital in Alexandria, Louisiana, part of CHRISTUS Health. Dr. Alphonse Sullivan is also affiliated with Rapides Regional Medical Center. The medical group on file is CHRISTUS Trinity Clinic. Dmand AI also links Dr. Alphonse Sullivan to 1 more hospital, 2 medical groups, 1 physician office, 1 home health agency and 1 hospice, each named with a free account.

See all 9 affiliations for Dr. Alphonse Sullivan

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Natalie Ketsia Alphonse Sullivan's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Alphonse Sullivan practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
CHRISTUS St. Frances Cabrini HospitalAvailable with a free account
+5 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Natalie Ketsia Alphonse Sullivan is one of 51 radiation oncologists in Louisiana

Radiation oncology is Dr. Alphonse Sullivan's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dmand AI has Dr. Alphonse Sullivan's licenses on file in 2 states: Florida and North Carolina.

Specialties and state licenses

  • Radiation oncology, FloridaPrimaryLicense ME148133 · taxonomy 2085R0001X
  • Student in an organized health care education/training program, North Carolinataxonomy 390200000X

Radiation oncologists near Dr. Alphonse Sullivan

Counts of radiation oncologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Natalie Ketsia Alphonse Sullivan billed Medicare for 8,315 services in 2024

CMS data shows 8,315 Medicare services from Dr. Alphonse Sullivan across 26 procedure codes in 2024, for 383 Medicare patients. Medicare paid $1,347,623 for them. Every service was in an office.

Medicare services, 20248,315
Medicare patients383
Paid by Medicare$1.3M
Procedure codes26

Dr. Alphonse Sullivan's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Imaging
2023: 6,0492024: 4,44427%
Other services
2023: 4,7012024: 3,58424%
Office and hospital visits
2023: 5172024: 28744%

Dr. Alphonse Sullivan compared with the Louisiana median for radiation oncologists, 2024

  • Dr. Alphonse Sullivan
  • Louisiana median
Medicare services
8,315vs 1,7244.8 times
Medicare patients
383vs 1702.3 times
Part D claims
132vs 9047% above

Medians across 56 radiation oncologists in Louisiana with Dmand AI profiles that report each measure.

Dr. Alphonse Sullivan's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Alphonse Sullivan

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Natalie Ketsia Alphonse Sullivan treated 383 Medicare patients in 2024, average age 77

CMS counts 383 Medicare patients who saw Dr. Alphonse Sullivan in 2024. The largest group is 75 to 84, with 184 patients. 75% of them have cancer, and 75% have high blood pressure. 3% are also on Medicaid. Their average risk score is 1.92, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Alphonse Sullivan's median patient age at 71, with 56% women.

Medicare patients, 2024383
Average age77
Average risk score1.92
Also on Medicaid3%

Dr. Alphonse Sullivan's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Alphonse Sullivan's Medicare patients by sex, 2024

  • Women17746%
  • Men20654%

Chronic conditions among Dr. Alphonse Sullivan's Medicare patients, 2024

  1. Cancer75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Arthritis58%
  5. Ischemic heart disease38%
  6. Chronic kidney disease31%
  7. Diabetes27%
  8. Anxiety26%

Share of Medicare patients with each condition. A patient can have several.

Dr. Alphonse Sullivan's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 71

Patient panel by sex, all payers

  • Women56%
  • Men43%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Natalie Ketsia Alphonse Sullivan wrote 273 Medicare Part D claims in 2024

In 2024, Dr. Alphonse Sullivan wrote 273 Medicare Part D claims for 129 patients. 82% of them were for generic drugs. CMS names the drug for 132 of them, across 5 drugs with 11 or more claims each, at $48,180 in total drug cost. In 2023, CMS named 203 claims across 10 drugs.

Part D claims, 2024273
Drugs named by CMS5
Total drug cost$48,180
Part D patients129

Dr. Alphonse Sullivan's Part D claims by kind of drug, 2024

  • Generic223 claims82%
  • Brand-name50 claims18%

Dr. Alphonse Sullivan's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Alphonse Sullivan's Part D claims, 2024

  • Opioids12%32 of 273 claims
  • Antibiotics5%15 of 273 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 2032024: 13235%

Drugs named by CMS: 5 in 2024, 10 in 2023.

See all prescribing by Dr. Alphonse Sullivan

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Natalie Ketsia Alphonse Sullivan scored 75 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Alphonse Sullivan for performance year 2024, reported individually. Dr. Alphonse Sullivan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes
MIPS final score, 2024
75 of 100

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Dr. Natalie Ketsia Alphonse Sullivan received $515 in industry payments from 2022 to 2025

CMS Open Payments shows 22 general payments to Dr. Alphonse Sullivan from 14 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Progenics Pharmaceuticals, Inc. paid the most, $69.

General payments to Dr. Alphonse Sullivan by program year, 2022 to 2025

Companies that paid Dr. Alphonse Sullivan the most, 2022 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Alphonse Sullivan

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Natalie Ketsia Alphonse Sullivan graduated from Wake Forest University School of Medicine

Dr. Alphonse Sullivan graduated from Wake Forest University School of Medicine in 2013.

  1. Medical schoolWake Forest University School of Medicine

Source: Dmand AI Professional Profile Data

Sources for Dr. Natalie Ketsia Alphonse Sullivan's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Natalie Ketsia Alphonse Sullivan

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Natalie Ketsia Alphonse Sullivan's NPI number?

Dr. Natalie Ketsia Alphonse Sullivan's NPI number is 1003255761. It was assigned on June 17, 2013, and it is active in the NPI Registry.

What kind of doctor is Dr. Natalie Ketsia Alphonse Sullivan?

Dr. Natalie Ketsia Alphonse Sullivan is a radiation oncologist in Alexandria, Louisiana. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).

Where does Dr. Natalie Ketsia Alphonse Sullivan practice?

Dr. Alphonse Sullivan practices at 3330 Masonic Drive, Alexandria, LA 71301. Dr. Alphonse Sullivan's primary practice is CHRISTUS St. Frances Cabrini Hospital in Alexandria, Louisiana, part of CHRISTUS Health. Dmand AI also links Dr. Alphonse Sullivan to 1 hospital, 2 medical groups, 1 physician office, 1 home health agency and 1 hospice.

What is Dr. Natalie Ketsia Alphonse Sullivan's office phone number?

The practice phone on file for Dr. Alphonse Sullivan is (318) 487-1122.

What is Dr. Natalie Ketsia Alphonse Sullivan's medical license number?

Dr. Alphonse Sullivan holds Florida license ME148133, one of the licenses on file in 2 states.

Which states has Dr. Natalie Ketsia Alphonse Sullivan been licensed in?

Dmand AI has state licenses on file for Dr. Alphonse Sullivan in Florida and North Carolina.

Which hospitals is Dr. Natalie Ketsia Alphonse Sullivan affiliated with?

Dr. Alphonse Sullivan practices at CHRISTUS St. Frances Cabrini Hospital in Alexandria, Louisiana. Dr. Alphonse Sullivan is also affiliated with Rapides Regional Medical Center. Dmand AI links Dr. Alphonse Sullivan to 1 more hospital.

What medical group is Dr. Natalie Ketsia Alphonse Sullivan part of?

Dr. Alphonse Sullivan is linked to CHRISTUS Trinity Clinic. Dmand AI links Dr. Alphonse Sullivan to 2 more medical groups.

Does Dr. Natalie Ketsia Alphonse Sullivan accept Medicare?

Yes. CMS data shows Dr. Alphonse Sullivan billed Medicare for 8,315 services in 2024, and Dr. Alphonse Sullivan accepts Medicare assignment.

What is Dr. Natalie Ketsia Alphonse Sullivan's MIPS score?

Dr. Alphonse Sullivan's MIPS final score for performance year 2024 is 75 out of 100, reported individually.

Show 6 more questionsShow fewer questions

How many Medicare patients does Dr. Natalie Ketsia Alphonse Sullivan see?

CMS counts 383 Medicare patients who saw Dr. Alphonse Sullivan in 2024, with an average age of 77.

What services does Dr. Natalie Ketsia Alphonse Sullivan bill to Medicare?

In 2024, Dr. Alphonse Sullivan's most billed Medicare services were medicare service (G6015), radiation oncology (77014) and radiation oncology (77300).

Where did Dr. Natalie Ketsia Alphonse Sullivan go to medical school?

Dr. Alphonse Sullivan graduated from Wake Forest University School of Medicine in 2013.

What drugs does Dr. Natalie Ketsia Alphonse Sullivan prescribe most?

In 2024 Medicare Part D data, Dr. Alphonse Sullivan's most prescribed drugs by claims were Tamsulosin HCl, Orgovyx and Ssd.

Has Dr. Natalie Ketsia Alphonse Sullivan received payments from drug or device companies?

CMS Open Payments shows $515 in general payments to Dr. Alphonse Sullivan from 14 companies from 2022 to 2025. The largest total came from Progenics Pharmaceuticals, Inc.

How long has Dr. Natalie Ketsia Alphonse Sullivan been practicing?

Dr. Alphonse Sullivan graduated from medical school in 2013, 13 years ago.

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