Nathan Allen Merriman, MD

NPI 1174686042ActiveIndividual· Specialist· Newark, DE

Specialist (MD) in Newark, Delaware, trained at University of North Carolina at Chapel Hill School of Medicine (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $27,252 for 280 claims, against $16,099 paid for services in 2024. Abbvie Inc. was the largest of 2 companies reporting payments in 2025, $150.43 in all, mostly food and beverage.

Overview

NPI	1174686042
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Dec 19, 2006
Last updated in NPPES	Jun 23, 2008

Specialties and licenses

Taxonomy	Code	License	State
Specialist Primary	174400000X	C1-0008632	DE

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 - Gastroenterology (UT)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	103
Services billed	209 across 20 procedure codes
Paid by Medicare	$16,099

Part D prescriptions in 2024

Prescriptions (claims)	280 · 629 30-day fills
Patients	88
Total drug cost	$27,252
Generic share	95% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of North Carolina at Chapel Hill School of Medicine
Graduation year	2002
Medicare specialty	Gastroenterology
Telehealth	Offers telehealth