Mark T. Warner, MD

NPI 1659531036ActiveIndividual· Internal Medicine, Pulmonary Disease· Houston, TX

Internal Medicine, Pulmonary Disease (MD) in Houston, Texas, trained at University of Texas Medical School at Houston (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $290,614 for 672 claims, against $37,473 paid for services in 2024. Insmed, Inc. was the largest of 4 companies reporting payments in 2025, $157.57 in all, mostly food and beverage.

Overview

NPI	1659531036
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Jun 10, 2008
Last updated in NPPES	Mar 21, 2025
Certified by provider	Mar 21, 2025

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Pulmonary Disease Primary	207RP1001X	N0542	TX

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 - Critical Care (Intensivists) (TX)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	125
Services billed	367 across 31 procedure codes
Paid by Medicare	$37,473

Part D prescriptions in 2024

Prescriptions (claims)	672 · 963 30-day fills
Patients	100
Total drug cost	$290,614
Generic share	39% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Texas Medical School at Houston
Graduation year	2005
Medicare specialty	Critical Care (Intensivists)
Secondary specialties	Internal Medicine, Pulmonary Disease
Telehealth	Offers telehealth