Francis Wing-Kai Chan, MD

NPI 1326140674ActiveIndividual· Internal Medicine, Gastroenterology· Hamden, CT

Internal Medicine, Gastroenterology (MD) in Hamden, Connecticut, trained at Columbia University College of Physicians and Surgeons (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $317,494 for 1,164 claims, against $89,802 paid for services in 2024. Abbvie Inc. was the largest of 11 companies reporting payments in 2025, $663.74 in all, mostly food and beverage.

Overview

NPI	1326140674
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Sep 5, 2006
Last updated in NPPES	May 27, 2021
Certified by provider	May 27, 2021

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	044312	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 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 (CT)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	267
Services billed	3,242 across 40 procedure codes
Paid by Medicare	$89,802

Part D prescriptions in 2024

Prescriptions (claims)	1,164 · 2,365 30-day fills
Patients	354
Total drug cost	$317,494
Generic share	78% of claims

Medicare sources and data years

Education and affiliations

Medical school	Columbia University College of Physicians and Surgeons
Graduation year	2003
Medicare specialty	Gastroenterology
Secondary specialties	Internal Medicine