Marc Fenster, MD
Gastroenterology Physician · Cedarhurst, NY
Marc Fenster, MD is a gastroenterology physician with a practice address in Cedarhurst, New York, and NPI 1144751595, issued on Mar 27, 2017. Check the license (New York 302653, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Marc Fenster
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 302653 NY
Self-reported in NPPES; status is on the state search - Practice location
- 657 Central Ave, Cedarhurst, NY 11516
- Phone
- (516) 374-5570
- Enumerated
- Mar 27, 2017
- Record last updated
- Aug 23, 2023
- Medicare enrollment
- Enrolled (PECOS I20230601002124); may accept Medicare assignment
- Medical or professional school
- Albert Einstein College Of Medicine Of Yeshiva University, 2017
- Entity
- Type 1 · individual
Also registered at 657 Central Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Diego ContrerasPhysical Therapy Assistant1215551783
- Antonella DimaggioOccupational Therapist1386565869
- Jay Fenster, MDGastroenterology Physician1467434126
- Lauren Fenster, PAPhysician Assistant1639097421
- Eric Freeman, MDOrthopaedic Surgery Physician1306817515
- Kerri-Ann Giambruno, PA-CPhysician Assistant1164233615
Verify Marc Fenster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 302653Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average gastroenterology physician in 2024
500 Medicare Part D claims for 268 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Omeprazole116 claims
- Sod Sulf-Potass Sulf-Mag Sulf94 claims
- Esomeprazole Magnesium62 claims
- Gavilyte-G43 claims
- Pantoprazole Sodium29 claims
- Linzess27 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): 83.7 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).
Industry payments in 2024: $1,977.10
65 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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.
3 hospitals and group practices
- Montefiore Medical CenterBronx, NY · Acute Care Hospitals3 of 5 stars
- Five Towns GastroenterologyOceanside, NY
- St John's Medical Services PCFar Rockaway, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Gastroenterology Physician providers in New York
There are 1,797 gastroenterology physician records in New York.
Other gastroenterology physician records in New York
- Elie Abadie, MDBrooklyn, NY1639235435
- Hafsa Abbas, MDFlushing, NY1487061438
- Naeem Abbas, MDValley Stream, NY1437432192
- Uzma Abbasi, M.D.Oneida, NY1275856106
- Maisa Abdalla, M.D.Rochester, NY1669645222
- Muhammad Abdullah, MDBrooklyn, NY1053312645
- Arthur Abelow, MDBronx, NY1235242728
- Elie Abemayor, M.D.Mount Kisco, NY1376565358
- Jeffrey Abergel, MDCortlandt Manor, NY1649472382
- Chaim Abittan, MDGreat Neck, NY1972512002
Common questions
What is Marc Fenster, MD's NPI number?
Marc Fenster, MD's National Provider Identifier (NPI) is 1144751595, issued on Mar 27, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Marc Fenster, MD located?
The NPPES record lists a practice address at 657 Central Ave, Cedarhurst, NY, 11516. Phone: (516) 374-5570. Providers update this record themselves, so call before visiting.
How can I verify Marc Fenster, MD's license?
NPPES lists New York license number 302653, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marc Fenster, MD prescribe under Medicare Part D?
In 2024, Marc Fenster, MD had 500 Medicare Part D claims for 268 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Marc Fenster, MD's MIPS final score?
The 2023 MIPS final score is 83.7 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.