Jay Samuel Fenster, MD

NPI 1467434126ActiveIndividual· Internal Medicine, Gastroenterology· Cedarhurst, NY

Internal Medicine, Gastroenterology (MD) in Cedarhurst, New York, trained at State University of New York Downstate Medical Center (class of 1986). In 2024 Medicare paid $338,414 for 646 patients, and Part D covered 936 of their prescriptions, 81% of them generic. Olympus America Inc. was the largest of 18 companies reporting payments in 2025, $3,762 in all, mostly food and beverage.

Overview

NPI	1467434126
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Nov 17, 2005
Last updated in NPPES	Jul 13, 2026

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	174304	NY

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Oct 9, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 4, 2026	No match	—
New York OMIG · Nov 4, 2026	No match	—
Ohio Medicaid · Nov 4, 2026	No match	—
Pennsylvania Medicheck · Nov 4, 2026	No match	—
Washington HCA · Nov 4, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Gastroenterology (NY)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	646
Services billed	2,136 across 29 procedure codes
Paid by Medicare	$338,414

Part D prescriptions in 2024

Prescriptions (claims)	936 · 1,723 30-day fills
Patients	352
Total drug cost	$198,970
Generic share	81% of claims

Medicare sources and data years

Education and affiliations

Medical school	State University of New York Downstate Medical Center
Graduation year	1986
Medicare specialty	Gastroenterology
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth