Carl S. Merlin, M.D.
Radiation Oncology Physician · New Orleans, LA
Carl S. Merlin, M.D. is a radiation oncology physician with a practice address in New Orleans, Louisiana, and NPI 1235364159, issued on May 20, 2009. Check the license (Louisiana 0009698, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Carl S. Merlin
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 0009698 LA
Self-reported in NPPES; status is on the state search - Practice location
- 3 Poydras St, New Orleans, LA 70130
- Phone
- (504) 529-3143
- Enumerated
- May 20, 2009
- Record last updated
- May 20, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid ID
- 1131474 LA
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 66 in Louisiana → Look up another NPI →
Verify Carl S. Merlin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 0009698Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average radiation oncology physician in 2024
11 Medicare Part D claims, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Carl S. Merlin among 66 radiation oncology physician records in Louisiana
Carl S. Merlin, M.D. is one of 66 radiation oncology physician records with a practice address in Louisiana. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 62% of them.
- NPI issued2009 · 62% of these records are older, 30% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 74% of these records are
- Record last updated2009 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Louisiana
There are 66 radiation oncology physician records in Louisiana.
All 66 in Louisiana → Every provider in New Orleans → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Roland Hawkins, MDNew Orleans, LA 701211972551133
- Christophe Marques, MDNew Orleans, LA 701211104288216
- Troy Scroggins, MDNew Orleans, LA 701211811934219
- Clayton Smith, M.D., PH.D.New Orleans, LA 701211417249418
- Cyrus WashingtonJefferson, LA 701211760010920
- Ashley Brown, M.D.New Orleans, LA 701151003295551
- Kareem Fakhoury, MDNew Orleans, LA 701151467956375
- Ellen Zakris, MDNew Orleans, LA 701151760445522
Common questions
What is Carl S. Merlin, M.D.'s NPI number?
Carl S. Merlin, M.D.'s National Provider Identifier (NPI) is 1235364159, issued on May 20, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Carl S. Merlin, M.D. located?
The NPPES record lists a practice address at 3 Poydras St, New Orleans, LA, 70130. Phone: (504) 529-3143. Providers update this record themselves, so call before visiting.
How can I verify Carl S. Merlin, M.D.'s license?
NPPES lists Louisiana license number 0009698, as entered by the provider. Search the Louisiana State Board of Medical Examiners at https://www.lsbme.la.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Carl S. Merlin, M.D. prescribe under Medicare Part D?
In 2024, Carl S. Merlin, M.D. had 11 Medicare Part D claims; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.