John Gunn Lee, MD

NPI 1487734521ActiveIndividual· Internal Medicine, Gastroenterology· Orange, CA

Internal Medicine, Gastroenterology (MD) in Orange, California, trained at University of Miami, Lm Miller School of Medicine (class of 1987). In 2024 Medicare paid $273,071 for 742 patients, and Part D covered 437 of their prescriptions, 81% of them generic. Medtronic, Inc. reported $33.74 in payments in 2025, mostly food and beverage.

Overview

NPI	1487734521
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Oct 16, 2006
Last updated in NPPES	Mar 26, 2014

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	000000G63678	CA

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 (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	742
Services billed	1,738 across 65 procedure codes
Paid by Medicare	$273,071

Part D prescriptions in 2024

Prescriptions (claims)	437 · 484 30-day fills
Patients	359
Total drug cost	$12,855
Generic share	81% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Miami, Lm Miller School of Medicine
Graduation year	1987
Medicare specialty	Gastroenterology
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth