NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1437599529 M.D.
Verify on CMS → Hamza Abdulla, M.D.
Gastroenterology Physician in Easton, 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 16,567 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
715
Medicare Part D claims · 256 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
78%
generic claims · 22% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$157.98
8 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Hamza Abdulla, M.D. filed 715 Medicare Part D claims in 2023 as a Gastroenterology Physician in Easton, Maryland, prescribing 78% generic.
- 715
- Part D claims, 2023
- 78%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Hamza Abdulla, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
715 Top 29% higher than 71% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. 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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Hamza Abdulla, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 Hamza Abdulla, M.D.?
Quality data not reportedPrimary specialty
Gastroenterology Physician
Medicare Part D claims
715 14% vs specialty avg
Specialty distribution in Maryland
How Gastroenterology Physician compares to other specialties among Maryland providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Gastroenterology Physician. Verify directly:
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).
Hamza Abdulla, M.D. appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M.D. credentials at 511 IDLEWILD AVE, Easton, MD, 21601, with a listed phone of (410) 822-6005. NPI 1437599529 was issued on 07/03/2013.
Medicare Part D records for calendar year 2023 show 715 prescription claims written by this provider, covering 256 Medicare beneficiaries and totaling roughly $226K in drug spend, split 22% brand-name and 78% generic by claim count.
Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 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 | 1437599529 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/03/2013 |
Hospital and facility affiliations
Facilities where Hamza Abdulla, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
University OF Maryland Community Medical Group Inc
Centreville, MD
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Hamza Abdulla, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$158
Largest payer
ABBVIE INC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Typical
Hamza Abdulla, M.D. - brand share 22.0%
Gastroenterology Physician average
22% brand-name claims vs 78% generic, on 715 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
715
Total Claims
$226K
Total Drug Cost
256
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,408
- Total Day Supply
- 38,594
- Brand vs Generic
- 22% brand / 78% generic
- Brand Drug Cost
- $173K
- Generic Drug Cost
- $52K
- Antibiotic Claims
- 25
Patient Demographics
- Average Patient Age
- 71.9 years
- Avg HCC Risk Score
- 1.32
- Gender Split
- 63% female / 38% male
- Age Distribution
- <65: 40, 65-74: 110, 75-84: 77, 85+: 29
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Hamza Abdulla, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Pantoprazole Sodium
Pantoprazole Sodium
129 claims
- Omeprazole
Omeprazole
86 claims
- Linzess
Linzess
57 claims
- Esomeprazole Magne… 49
Esomeprazole Magnesium
49 claims
- Famotidine 34
Famotidine
34 claims
- Sucralfate 33
Sucralfate
33 claims
- Dexlansoprazole Dr 27
Dexlansoprazole Dr
27 claims
- Dicyclomine Hcl 23
Dicyclomine Hcl
23 claims
| Drug | Claims |
|---|---|
| Pantoprazole Sodium | 129 |
| Omeprazole | 86 |
| Linzess Linaclotide | 57 |
| Esomeprazole Magnesium | 49 |
| Famotidine | 34 |
| Sucralfate | 33 |
| Dexlansoprazole Dr Dexlansoprazole | 27 |
| Dicyclomine Hcl | 23 |
| Motegrity Prucalopride Succinate | 19 |
| Ondansetron Hcl | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Hamza Abdulla, M.D. fits within the Gastroenterology Physician landscape nationally.
16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider
Hamza Abdulla, M.D.'s 715 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 Abdulla.
Dr. Maaza Abdi
M.D.
Baltimore, MD
Dr. Tsion Abdi
MD
Baltimore, MD
Dr. Thomas Abernathy
M.D.
Catonsville, MD
Dr. Ruben Acosta
M.D.
Silver Spring, MD
Dr. Abdulhosein Adham
M.D.
Oxon Hill, 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Maryland
Frequently Asked Questions
What is Hamza Abdulla, M.D.'s specialty? ▼
Hamza Abdulla, M.D. specializes in Gastroenterology Physician and practices in Easton, Maryland. Credentials: M.D..
How much does Hamza Abdulla, M.D. prescribe under Medicare Part D? ▼
In 2023, Hamza Abdulla, M.D. wrote 715 Medicare Part D claims totaling $226K in drug costs for 256 beneficiaries.
Where is Hamza Abdulla, M.D. located? ▼
Hamza Abdulla, M.D. is located at 511 IDLEWILD AVE, Easton, MD, 21601. Phone: (410) 822-6005.
What is Hamza Abdulla, M.D.'s NPI number? ▼
Hamza Abdulla, M.D.'s National Provider Identifier (NPI) is 1437599529, issued on 07/03/2013.
Does Hamza Abdulla, M.D. prescribe more brand-name or generic drugs? ▼
Hamza Abdulla, M.D.'s prescribing is 22% brand-name and 78% generic drugs by claim count, with $173K in brand drug costs.
How many Gastroenterology Physician providers are there in the US? ▼
There are 16,567 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does Hamza Abdulla, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Hamza Abdulla, M.D.'s most frequently prescribed drugs include Pantoprazole Sodium, Omeprazole, Linzess. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Hamza Abdulla, M.D. accept Medicare? ▼
Hamza Abdulla, M.D. appears in CMS Medicare data with 715 Part D claims and 256 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Hamza Abdulla, M.D.'s credentials? ▼
Hamza Abdulla, M.D.'s NPI is 1437599529 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.
- 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
Compiled from official public sources by the PlainDoctor editorial team.