Katherine Marcel, MD
Internal Medicine Physician · Baton Rouge, LA
Katherine Marcel, MD is an internal medicine physician with a practice address in Baton Rouge, Louisiana, and NPI 1104288570, issued on Mar 24, 2016. Check the license (Louisiana 311859, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Katherine Marcel
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 311859 LA
Self-reported in NPPES; status is on the state search - Practice location
- 7373 Perkins RD, Baton Rouge, LA 70808
- Phone
- (225) 769-4044
- Enumerated
- Mar 24, 2016
- Record last updated
- Oct 29, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (225) 246-9116
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,749 in Louisiana → Look up another NPI →
Also registered at 7373 Perkins RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine Marcel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 311859Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% more Medicare Part D claims than the average internal medicine physician in 2024
5,934 Medicare Part D claims for 534 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Atorvastatin Calcium332 claims
- Levothyroxine Sodium293 claims
- Amlodipine Besylate197 claims
- Pantoprazole Sodium181 claims
- Mounjaro150 claims
- Losartan Potassium149 claims
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.
Industry payments in 2024: $136.19
8 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Katherine Marcel among 1,749 internal medicine physician records in Louisiana
Katherine Marcel, MD is one of 1,749 internal medicine physician records with a practice address in Louisiana. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 72% of them.
- NPI issued2016 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2019 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
256 internal medicine physician records list a practice address in Baton Rouge
They are 256 of the 12,526 NPPES records with a practice address in Baton Rouge, and 1,749 internal medicine physician records in Louisiana.
All 1,749 in Louisiana → Every provider in Baton Rouge → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Leo Blaize, M.D.Baton Rouge, LA 708081578563177
- Andre Bonnecaze, M.D.Baton Rouge, LA 708081144221060
- Curtis Chastain, M.D.Baton Rouge, LA 708081144220906
- Rachel Gruner, M.D.Baton Rouge, LA 708081306848197
- Charles Halliburton, M.D.Baton Rouge, LA 708081083614721
- Jon Jackson, M.D.Baton Rouge, LA 708081013909118
- Jeri Johnson, M.D.Baton Rouge, LA 708081689674111
- Jeffrey Kahn, MDBaton Rouge, LA 708081134129737
Common questions
What is Katherine Marcel, MD's NPI number?
Katherine Marcel, MD's National Provider Identifier (NPI) is 1104288570, issued on Mar 24, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Marcel, MD located?
The NPPES record lists a practice address at 7373 Perkins RD, Baton Rouge, LA, 70808. Phone: (225) 769-4044. Providers update this record themselves, so call before visiting.
How can I verify Katherine Marcel, MD's license?
NPPES lists Louisiana license number 311859, 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 Katherine Marcel, MD prescribe under Medicare Part D?
In 2024, Katherine Marcel, MD had 5,934 Medicare Part D claims for 534 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.