Timothy George Larson, M.D.

NPI 1326130204ActiveIndividual· Internal Medicine, Hematology & Oncology· Minneapolis, MN

Internal Medicine, Hematology & Oncology (M.D.) in Minneapolis, Minnesota, trained at University of California, San Francisco School of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $727,478 for 350 claims, against $34,422 paid for services in 2024. Genentech USA, Inc. was the largest of 3 companies reporting payments in 2025, $8,904 in all, mostly consulting fees.

Overview

NPI	1326130204
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	Sep 29, 2006
Last updated in NPPES	Oct 27, 2011

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Hematology & Oncology Primary	207RH0003X	38013	MN

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 - Hematology/Oncology (MN)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	69
Services billed	3,316 across 75 procedure codes
Paid by Medicare	$34,422

Part D prescriptions in 2024

Prescriptions (claims)	350 · 488 30-day fills
Patients	73
Total drug cost	$727,478
Generic share	75% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of California, San Francisco School of Medicine
Graduation year	1989
Medicare specialty	Hematology/Oncology
Telehealth	Offers telehealth