William Warren Sheaffer, M.D.

NPI 1750768388ActiveIndividual· Surgery, Vascular Surgery· Duluth, MN

Surgery, Vascular Surgery (M.D.) in Duluth, Minnesota, trained at Sanford School of Medicine of University of South Dakota (class of 2015). 315 Medicare patients in 2024, $74,699 paid; nearly all of their 286 Part D prescriptions were generic (97%). Penumbra, Inc. was the largest of 2 companies reporting payments in 2025, $123.42 in all, mostly food and beverage.

Overview

NPI	1750768388
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	May 4, 2015
Last updated in NPPES	Aug 29, 2022
Certified by provider	Aug 29, 2022

Specialties and licenses

Taxonomy	Code	License	State
Surgery, Vascular Surgery Primary	2086S0129X	71045	MN
Surgery	208600000X	52930	AZ
Surgery, Vascular Surgery	2086S0129X	52930	AZ

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 (AZ); Practitioner - Vascular Surgery (MN)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	315
Services billed	717 across 100 procedure codes
Paid by Medicare	$74,699

Part D prescriptions in 2024

Prescriptions (claims)	286 · 646 30-day fills
Patients	128
Total drug cost	$10,145
Generic share	97% of claims

Medicare sources and data years

Education and affiliations

Medical school	Sanford School of Medicine of University of South Dakota
Graduation year	2015
Medicare specialty	Vascular Surgery
Telehealth	Offers telehealth