Mark A. Farnie, M.D.

NPI 1578596516ActiveIndividual· Internal Medicine· Houston, TX

Internal Medicine (M.D.) in Houston, Texas, trained at University of Texas Medical School at Houston (class of 1987). Their prescriptions cost Medicare Part D more than their services did: $181,999 for 2,362 claims, against $12,763 paid for services in 2024. Averitas Pharma Inc. reported $41.29 in payments in 2025, mostly food and beverage.

Overview

NPI	1578596516
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	Jul 9, 2006
Last updated in NPPES	Dec 28, 2023
Certified by provider	Dec 28, 2023

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine Primary	207R00000X	H4313	TX
Pediatrics	208000000X	H4313	TX

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 10, 2026	No match	—
New York OMIG · Nov 10, 2026	No match	—
Ohio Medicaid · Nov 10, 2026	No match	—
Pennsylvania Medicheck · Nov 10, 2026	No match	—
Washington HCA · Nov 10, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Internal Medicine (TX)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	78
Services billed	187 across 20 procedure codes
Paid by Medicare	$12,763

Part D prescriptions in 2024

Prescriptions (claims)	2,362 · 5,236 30-day fills
Patients	227
Total drug cost	$181,999
Generic share	90% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Texas Medical School at Houston
Graduation year	1987
Medicare specialty	Internal Medicine
Secondary specialties	Pediatric Medicine