Jamie Marie Oleaga, M.D.

NPI 1265878813ActiveIndividual· Internal Medicine, Gastroenterology· Naperville, IL

Internal Medicine, Gastroenterology (M.D.) in Naperville, Illinois, trained at University of Iowa, Rj & L Carver College of Medicine (class of 2013). Their prescriptions cost Medicare Part D more than their services did: $454,619 for 787 claims, against $60,131 paid for services in 2024. Abbvie Inc. was the largest of 6 companies reporting payments in 2025, $556.64 in all, mostly food and beverage.

Overview

NPI	1265878813
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	May 21, 2013
Last updated in NPPES	Aug 16, 2023
Certified by provider	Aug 16, 2023

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Gastroenterology Primary	207RG0100X	036139484	IL

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 - Gastroenterology (IL)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	247
Services billed	690 across 65 procedure codes
Paid by Medicare	$60,131

Part D prescriptions in 2024

Prescriptions (claims)	787 · 1,386 30-day fills
Patients	320
Total drug cost	$454,619
Generic share	76% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of Iowa, Rj & L Carver College of Medicine
Graduation year	2013
Medicare specialty	Gastroenterology
Secondary specialties	Internal Medicine