William Matthew Walker, DO

NPI 1184146078ActiveIndividual· Hospitalist· Evansville, IN

Hospitalist (DO) in Evansville, Indiana, trained at University of Pikeville, Kentucky College of Osteopathic Med (class of 2016). In 2024 Medicare paid $77,033 for 274 patients, and Part D covered 482 of their prescriptions, 82% of them generic. Pfizer Inc. reported $19.76 in payments in 2025, mostly food and beverage.

Overview

NPI	1184146078
Status	Active
Entity type	Individual
Credential	DO
Sole proprietor	No
NPI issued	Jul 12, 2017
Last updated in NPPES	Sep 16, 2019

Specialties and licenses

Taxonomy	Code	License	State
Hospitalist Primary	208M00000X	02005727A	IN
Family Medicine	207Q00000X	02005727A	IN

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 - Hospitalist (IN); Practitioner - Hospitalist (KY)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	274
Services billed	982 across 9 procedure codes
Paid by Medicare	$77,033

Part D prescriptions in 2024

Prescriptions (claims)	482 · 642 30-day fills
Patients	158
Total drug cost	$51,845
Generic share	82% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Pikeville, Kentucky College of Osteopathic Med
Graduation year	2016
Medicare specialty	Hospitalist
Secondary specialties	Family Practice