Napoleon C. Marcelo, M.D.
Gastroenterology Physician · Bowie, MD
Napoleon C. Marcelo, M.D. is a gastroenterology physician with a practice address in Bowie, Maryland, and NPI 1700833365, issued on May 28, 2006. Check the license (Maryland D0031345, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Napoleon C. Marcelo
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- D0031345 MD
Self-reported in NPPES; status is on the state search - Practice location
- 4000 Mitchellville RD, Bowie, MD 20716
- Phone
- (301) 262-8602
- Enumerated
- May 28, 2006
- Record last updated
- Jan 8, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (301) 805-7784
- Medicaid ID
- 436051600 MD
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 505 in Maryland → Look up another NPI →
Also registered at 4000 Mitchellville RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- James Brinster, DDSDentist1174749667
Verify Napoleon C. Marcelo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0031345Check 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% fewer Medicare Part D claims than the average gastroenterology physician in 2024
106 Medicare Part D claims for 69 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Gavilyte-G30 claims
- Peg-3350 And Electrolytes12 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 86.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Napoleon C. Marcelo among 505 gastroenterology physician records in Maryland
Napoleon C. Marcelo, M.D. is one of 505 gastroenterology physician records with a practice address in Maryland. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 46% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2013 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Maryland
There are 505 gastroenterology physician records in Maryland.
All 505 in Maryland → Every provider in Bowie → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Ritu Sachdev, M.D.Bowie, MD 207161851568224
- David Siegel, M.D.Bowie, MD 207161104820182
- Gurinder Singh, M.D.Bowie, MD 207161861433104
- Sanjiv Sood, M.D.Bowie, MD 207161154368298
- Asghar Shaigany, MDBladensburg, MD 207101336135979
- Jeffrey Bernstein, M.D.Laurel, MD 207071861497422
- Priti Bijpuria, M.D.Laurel, MD 207071306010236
- Richard Chasen, M.D.Laurel, MD 207071790780351
Common questions
What is Napoleon C. Marcelo, M.D.'s NPI number?
Napoleon C. Marcelo, M.D.'s National Provider Identifier (NPI) is 1700833365, issued on May 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Napoleon C. Marcelo, M.D. located?
The NPPES record lists a practice address at 4000 Mitchellville RD, Bowie, MD, 20716. Phone: (301) 262-8602. Providers update this record themselves, so call before visiting.
How can I verify Napoleon C. Marcelo, M.D.'s license?
NPPES lists Maryland license number D0031345, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Napoleon C. Marcelo, M.D. prescribe under Medicare Part D?
In 2024, Napoleon C. Marcelo, M.D. had 106 Medicare Part D claims for 69 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Napoleon C. Marcelo, M.D.'s MIPS final score?
The 2023 MIPS final score is 86.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.