Marcus Samuel Davis, DO

NPI 1780114504ActiveIndividual· Internal Medicine, Gastroenterology· Abilene, TX

Internal Medicine, Gastroenterology (DO) in Abilene, Texas, trained at University of North Texas Hsc, College of Osteopathic Med (class of 2017). Their prescriptions cost Medicare Part D more than their services did: $194,825 for 462 claims, against $121,969 paid for services in 2024. Boston Scientific Corporation was the largest of 4 companies reporting payments in 2025, $210.29 in all, mostly food and beverage.

Overview

NPI	1780114504
Status	Active
Entity type	Individual
Credential	DO
Sole proprietor	No
NPI issued	Jun 14, 2017
Last updated in NPPES	Apr 13, 2023
Certified by provider	Apr 13, 2023

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	R8552	TX
Internal Medicine	207R00000X	BP10061509	TX
Internal Medicine	207R00000X	R8552	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 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 (TX)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	399
Services billed	1,183 across 51 procedure codes
Paid by Medicare	$121,969

Part D prescriptions in 2024

Prescriptions (claims)	462 · 681 30-day fills
Patients	157
Total drug cost	$194,825
Generic share	87% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of North Texas Hsc, College of Osteopathic Med
Graduation year	2017
Medicare specialty	Gastroenterology
Telehealth	Offers telehealth