James D. Lewis, MD

NPI 1841204872ActiveIndividual· Internal Medicine, Gastroenterology· Philadelphia, PA

Internal Medicine, Gastroenterology (MD) in Philadelphia, Pennsylvania, trained at Perelman School of Med at the University of Pennsylvania (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $1,860,445 for 624 claims, against $11,651 paid for services in 2024. Janssen Biotech, Inc. was the largest of 3 companies reporting payments in 2025, $16,546 in all, mostly consulting fees.

Overview

NPI	1841204872
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Jul 27, 2006
Last updated in NPPES	Dec 8, 2017

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	MD056549L	PA

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 - Gastroenterology (PA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	60
Services billed	153 across 17 procedure codes
Paid by Medicare	$11,651

Part D prescriptions in 2024

Prescriptions (claims)	624 · 976 30-day fills
Patients	132
Total drug cost	$1,860,445
Generic share	65% of claims

Medicare sources and data years

Education and affiliations

Medical school	Perelman School of Med at the University of Pennsylvania
Graduation year	1991
Medicare specialty	Gastroenterology
Secondary specialties	Hospitalist, Internal Medicine
Telehealth	Offers telehealth