Timothy King Liem, MD

NPI 1790882561ActiveIndividual· Surgery, Vascular Surgery· Portland, OR

Surgery, Vascular Surgery (MD) in Portland, Oregon, trained at University of Southern California Keck School of Medicine (class of 1990). In 2024 Medicare paid $58,393 for 355 patients, and Part D covered 104 of their prescriptions, 72% of them generic. Penumbra, Inc. reported $167.50 in payments in 2024, mostly food and beverage.

Overview

NPI	1790882561
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Sep 20, 2006
Last updated in NPPES	Jul 16, 2007

Specialties and licenses

Taxonomy	Code	License	State
Surgery, Vascular Surgery Primary	2086S0129X	MD22836	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 - Vascular Surgery (OR)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	355
Services billed	519 across 81 procedure codes
Paid by Medicare	$58,393

Part D prescriptions in 2024

Prescriptions (claims)	104 · 264 30-day fills
Patients	37
Total drug cost	$37,849
Generic share	72% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Southern California Keck School of Medicine
Graduation year	1990
Medicare specialty	Vascular Surgery
Telehealth	Offers telehealth