Peter W. Adesman, MD

NPI 1952381394ActiveIndividual· Internal Medicine, Gastroenterology· Medford, OR

Internal Medicine, Gastroenterology (MD) in Medford, Oregon, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1979). Their prescriptions cost Medicare Part D more than their services did: $666,103 for 956 claims, against $96,419 paid for services in 2024. Abbvie Inc. was the largest of 3 companies reporting payments in 2025, $67.85 in all, mostly food and beverage.

Overview

NPI	1952381394
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Jan 20, 2006
Last updated in NPPES	Feb 25, 2026
Certified by provider	Feb 25, 2026

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	MD12494	OR

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 (OR)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	557
Services billed	707 across 33 procedure codes
Paid by Medicare	$96,419

Part D prescriptions in 2024

Prescriptions (claims)	956 · 1,312 30-day fills
Patients	421
Total drug cost	$666,103
Generic share	78% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Graduation year	1979
Medicare specialty	Gastroenterology
Secondary specialties	Internal Medicine