Jonathan Philip Horwitz, D.O.

NPI 1003895749ActiveIndividual· Internal Medicine, Gastroenterology· Liberty, MO

Internal Medicine, Gastroenterology (D.O.) in Liberty, Missouri, trained at At Still University of Health Sciences, College of Osteo Med, Kirksville (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $556,819 for 1,013 claims, against $199,367 paid for services in 2024. Abbvie Inc. was the largest of 4 companies reporting payments in 2025, $288.46 in all, mostly food and beverage.

Overview

NPI	1003895749
Status	Active
Entity type	Individual
Credential	D.O.
Sole proprietor	No
NPI issued	Jan 11, 2006
Last updated in NPPES	Feb 3, 2011

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	2010003215	MO
Internal Medicine	207R00000X	036-114186	IL
Internal Medicine	207R00000X	50318-020	WI

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 - Gastroenterology (MO)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	611
Services billed	5,419 across 53 procedure codes
Paid by Medicare	$199,367

Part D prescriptions in 2024

Prescriptions (claims)	1,013 · 1,668 30-day fills
Patients	364
Total drug cost	$556,819
Generic share	85% of claims

Medicare sources and data years

Education and affiliations

Medical school	At Still University of Health Sciences, College of Osteo Med, Kirksville
Graduation year	2002
Medicare specialty	Gastroenterology
Secondary specialties	Internal Medicine