NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1700833365 M.D.
Verify on CMS → Napoleon Marcelo, M.D.
Gastroenterology Physician in Bowie, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,601 in Gastroenterology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
32
Medicare Part D claims · 18 beneficiaries · Gastroenterology Physician avg: 833
MIPS score
86.9/100
▲ 3 pts above national avg 83.5 · Above neutral
What the federal data shows
Napoleon Marcelo, M.D. reported a CMS MIPS final score of 86.9/100 - above the 83.5 national average - and filed 32 Medicare Part D claims in 2023.
- 86.9/100
- MIPS score · +3 vs avg
- 32
- Part D claims, 2023
- Likely
- board-certified (heuristic)
- ≥49th
- pct among measured MIPS (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Napoleon Marcelo, M.D.'s MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
87 ≥ 49th percentile 49% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Napoleon Marcelo, M.D. sits
This provider among gastroenterology physician peers
Across the 5,560 gastroenterology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Napoleon Marcelo, M.D. writes more Part D claims than 2% of them and scores higher on MIPS quality than 55% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one gastroenterology physician peer from a representative sample of 60; the gold marker is Napoleon Marcelo, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Napoleon Marcelo, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Napoleon Marcelo, M.D.?
High performer (top quartile)Primary specialty
Gastroenterology Physician
Medicare Part D claims
32 96% vs specialty avg
MIPS final score
86.9/100 3.4 pts vs avg
Specialty distribution in Maryland
How Gastroenterology Physician compares to other specialties among Maryland providers
Medicare quality performance, MIPS
Napoleon Marcelo, M.D.'s 2023 MIPS final score plotted against the Gastroenterology Physician national average
- MIPS Final Score
- 86.9/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Gastroenterology Physician) - 86.9/100 vs national avg 83.5
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Napoleon Marcelo, M.D. appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M.D. credentials at 4000 MITCHELLVILLE RD, Bowie, MD, 20716, with a listed phone of (301) 262-8602. NPI 1700833365 was issued on 05/28/2006.
Medicare Part D records for calendar year 2023 show 32 prescription claims written by this provider, covering 18 Medicare beneficiaries and totaling roughly $6K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 86.9/100 for the 2023 performance year (Quality 70.1, Cost 80.8), compared with the 83.5 average among clinicians with a measured score.
Gastroenterology Physician is a mid-sized specialty nationwide, with 16,601 enrolled providers across 54 states and an average of 833 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1700833365 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/28/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
86.9298
Final Score
Measured-score avg: 83.5
70.0824
Quality
80.8031
Cost
100
Promoting Interoperability
Reporting: Group practice
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
32
Total Claims
$6K
Total Drug Cost
18
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 46
- Total Day Supply
- 1,022
- Generic Drug Cost
- $569
Patient Demographics
- Average Patient Age
- 70.3 years
- Avg HCC Risk Score
- 1.13
Gastroenterology Physician Overview
How Napoleon Marcelo, M.D. fits within the Gastroenterology Physician landscape nationally.
16,601
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider
Napoleon Marcelo, M.D.'s 32 claims are below the specialty average of 833.
Nearby Gastroenterology Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Marcelo.
Dr. Maaza Abdi
M.D.
Baltimore, MD
Dr. Tsion Abdi
MD
Baltimore, MD
Dr. Hamza Abdulla
M.D.
Easton, MD
Dr. Thomas Abernathy
M.D.
Catonsville, MD
Dr. Ruben Acosta
M.D.
Silver Spring, MD
Compare Gastroenterology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Maryland medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Gastroenterology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Napoleon Marcelo, M.D.'s specialty? ▼
Napoleon Marcelo, M.D. specializes in Gastroenterology Physician and practices in Bowie, Maryland. Credentials: M.D..
How much does Napoleon Marcelo, M.D. prescribe under Medicare Part D? ▼
In 2023, Napoleon Marcelo, M.D. wrote 32 Medicare Part D claims totaling $6K in drug costs for 18 beneficiaries.
What is Napoleon Marcelo, M.D.'s Medicare quality score? ▼
Napoleon Marcelo, M.D. has a CMS MIPS Final Score of 86.9/100 (Quality: 70.1, Cost: 80.8). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Napoleon Marcelo, M.D. located? ▼
Napoleon Marcelo, M.D. is located at 4000 MITCHELLVILLE RD, Bowie, MD, 20716. Phone: (301) 262-8602.
What is Napoleon Marcelo, M.D.'s NPI number? ▼
Napoleon Marcelo, M.D.'s National Provider Identifier (NPI) is 1700833365, issued on 05/28/2006.
How many Gastroenterology Physician providers are there in the US? ▼
There are 16,601 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
Does Napoleon Marcelo, M.D. accept Medicare? ▼
Napoleon Marcelo, M.D. appears in CMS Medicare data with 32 Part D claims and 18 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Napoleon Marcelo, M.D.'s credentials? ▼
Napoleon Marcelo, M.D.'s NPI is 1700833365 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.