Leonard G. Quallich III, MD

NPI 1093797326ActiveIndividual· Internal Medicine, Gastroenterology· Troy, MI

Internal Medicine, Gastroenterology (MD) in Troy, Michigan, trained at Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $366,555 for 1,677 claims, against $94,650 paid for services in 2024. Abbvie Inc. was the largest of 2 companies reporting payments in 2025, $63.18 in all, mostly food and beverage.

Overview

NPI	1093797326
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Nov 14, 2005
Last updated in NPPES	Nov 13, 2013

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	4301067700	MI

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 (MI)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	465
Services billed	861 across 42 procedure codes
Paid by Medicare	$94,650

Part D prescriptions in 2024

Prescriptions (claims)	1,677 · 3,873 30-day fills
Patients	469
Total drug cost	$366,555
Generic share	94% of claims

Medicare sources and data years

Education and affiliations

Medical school	Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
Graduation year	1996
Medicare specialty	Gastroenterology
Telehealth	Offers telehealth