Chun Wang Lam, MD

NPI 1255394680ActiveIndividual· Internal Medicine, Gastroenterology· Trumbull, CT

Internal Medicine, Gastroenterology (MD) in Trumbull, Connecticut, trained at State University of New York Downstate Medical Center (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $659,266 for 2,171 claims, against $101,277 paid for services in 2024. Olympus Medical Systems Corporation reported $2,065 in payments in 2025, mostly consulting fees.

Overview

NPI	1255394680
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Apr 7, 2006
Last updated in NPPES	May 31, 2013

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	040235	CT
Internal Medicine, Gastroenterology	207RG0100X	208229	NY
Internal Medicine	207R00000X	040235	CT

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 10, 2026	No match	—
New York OMIG · Nov 10, 2026	No match	—
Ohio Medicaid · Nov 10, 2026	No match	—
Pennsylvania Medicheck · Nov 10, 2026	No match	—
Washington HCA · Nov 10, 2026	No match	—

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

Medicare

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

Medicare services in 2024

Medicare patients	416
Services billed	921 across 55 procedure codes
Paid by Medicare	$101,277

Part D prescriptions in 2024

Prescriptions (claims)	2,171 · 4,524 30-day fills
Patients	661
Total drug cost	$659,266
Generic share	80% of claims

Medicare sources and data years

Education and affiliations

Medical school	State University of New York Downstate Medical Center
Graduation year	1996
Medicare specialty	Gastroenterology
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth