Marie O'Brien, D.O.

NPI 1083836464ActiveIndividual· Internal Medicine, Rheumatology· Allentown, PA

Internal Medicine, Rheumatology (D.O.) in Allentown, Pennsylvania, trained at Philadelphia College of Osteopathic Medicine (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $2,356,063 for 2,565 claims, against $188,540 paid for services in 2024. Abbvie Inc. was the largest of 2 companies reporting payments in 2025, $418.89 in all, mostly food and beverage.

Overview

NPI	1083836464
Status	Active
Entity type	Individual
Credential	D.O.
Sole proprietor	No
NPI issued	May 3, 2007
Last updated in NPPES	Nov 18, 2015

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Rheumatology Primary	207RR0500X	OS012497	PA

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 - Rheumatology (PA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	491
Services billed	16,274 across 52 procedure codes
Paid by Medicare	$188,540

Part D prescriptions in 2024

Prescriptions (claims)	2,565 · 5,297 30-day fills
Patients	444
Total drug cost	$2,356,063
Generic share	84% of claims

Medicare sources and data years

Education and affiliations

Medical school	Philadelphia College of Osteopathic Medicine
Graduation year	2002
Medicare specialty	Rheumatology
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth