Peter M. Oshin, MD

NPI 1093732331ActiveIndividual· Internal Medicine, Gastroenterology· Gurnee, IL

Internal Medicine, Gastroenterology (MD) in Gurnee, Illinois, trained at R Franklin University of Med & Sci/Chicago Medical School (class of 1993). In 2024 Medicare paid $29,261 for 151 patients, and Part D covered 168 of their prescriptions, 80% of them generic. Madrigal Pharmaceuticals was the largest of 6 companies reporting payments in 2025, $762.60 in all, mostly food and beverage.

Overview

NPI	1093732331
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Jul 16, 2006
Last updated in NPPES	May 2, 2023
Certified by provider	May 2, 2023

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	036-094708	IL

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 (IL)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	151
Services billed	330 across 29 procedure codes
Paid by Medicare	$29,261

Part D prescriptions in 2024

Prescriptions (claims)	168 · 200 30-day fills
Patients	94
Total drug cost	$7,862
Generic share	80% of claims

Medicare sources and data years

Education and affiliations

Medical school	R Franklin University of Med & Sci/Chicago Medical School
Graduation year	1993
Medicare specialty	Gastroenterology
Secondary specialties	Internal Medicine