Marc J. Davis, D.O.

NPI 1194763060ActiveIndividual· Family Medicine· Ada, OK

Family Medicine (D.O.) in Ada, Oklahoma, trained at Oklahoma State University College of Osteopathic Medicine (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $745,039 for 7,057 claims, against $12,410 paid for services in 2024. Dexcom, Inc. was the largest of 2 companies reporting payments in 2025, $32.24 in all, mostly food and beverage.

Overview

NPI	1194763060
Status	Active
Entity type	Individual
Credential	D.O.
Sole proprietor	No
NPI issued	Jun 3, 2006
Last updated in NPPES	Sep 15, 2020
Certified by provider	Sep 15, 2020

Specialties and licenses

Taxonomy	Code	License	State
Family Medicine Primary	207Q00000X	3540	OK

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 - Family Practice (OK)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	168
Services billed	416 across 25 procedure codes
Paid by Medicare	$12,410

Part D prescriptions in 2024

Prescriptions (claims)	7,057 · 15,419 30-day fills
Patients	553
Total drug cost	$745,039
Generic share	85% of claims

Medicare sources and data years

Education and affiliations

Medical school	Oklahoma State University College of Osteopathic Medicine
Graduation year	1991
Medicare specialty	Family Practice
Secondary specialties	Osteopathic Manipulative Medicine