John T. Liu, MD

NPI 1881734465ActiveIndividual· Internal Medicine· Los Angeles, CA

Internal Medicine (MD) in Los Angeles, California, trained at University of Southern California Keck School of Medicine (class of 1997). In 2024 Medicare paid $197,195 for 320 patients, and Part D covered 3,445 of their prescriptions, 88% of them generic. Medtronic, Inc. was the largest of 4 companies reporting payments in 2025, $428.47 in all, mostly food and beverage.

Overview

NPI	1881734465
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	Yes
NPI issued	Feb 6, 2007
Last updated in NPPES	Mar 7, 2023

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine Primary	207R00000X	A69994	CA

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Oct 9, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 4, 2026	No match	—
New York OMIG · Nov 4, 2026	No match	—
Ohio Medicaid · Nov 4, 2026	No match	—
Pennsylvania Medicheck · Nov 4, 2026	No match	—
Washington HCA · Nov 4, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Internal Medicine (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	320
Services billed	2,105 across 13 procedure codes
Paid by Medicare	$197,195

Part D prescriptions in 2024

Prescriptions (claims)	3,445 · 6,295 30-day fills
Patients	224
Total drug cost	$260,417
Generic share	88% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Southern California Keck School of Medicine
Graduation year	1997
Medicare specialty	Internal Medicine
Telehealth	Offers telehealth