Jeffrey S. Weiser, MD

NPI 1437253051ActiveIndividual· Internal Medicine, Gastroenterology· Farmington, CT

Internal Medicine, Gastroenterology (MD) in Farmington, Connecticut, trained at Icahn School of Medicine at Mount Sinai (class of 1992). Their prescriptions cost Medicare Part D more than their services did: $430,421 for 1,277 claims, against $242,028 paid for services in 2024. Abbvie Inc. was the largest of 11 companies reporting payments in 2025, $1,161 in all, mostly food and beverage.

Overview

NPI	1437253051
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Sep 12, 2006
Last updated in NPPES	Jan 7, 2020
Certified by provider	Jan 7, 2020

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	035977	CT

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Nov 10, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026	No match	—
New York OMIG · Nov 11, 2026	No match	—
Ohio Medicaid · Nov 11, 2026	No match	—
Pennsylvania Medicheck · Nov 11, 2026	No match	—
Washington HCA · Nov 11, 2026	No match	—

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

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Internal Medicine (CT)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	286
Services billed	16,481 across 44 procedure codes
Paid by Medicare	$242,028

Part D prescriptions in 2024

Prescriptions (claims)	1,277 · 2,511 30-day fills
Patients	465
Total drug cost	$430,421
Generic share	81% of claims

Medicare sources and data years

Education and affiliations

Medical school	Icahn School of Medicine at Mount Sinai
Graduation year	1992
Medicare specialty	Internal Medicine
Secondary specialties	Gastroenterology
Telehealth	Offers telehealth