Kevin Joseph Callahan, D.O.

NPI 1134125156ActiveIndividual· Internal Medicine, Hematology & Oncology· Camden, NJ

Internal Medicine, Hematology & Oncology (D.O.) in Camden, New Jersey, trained at University of New England, College of Osteo Medicine (class of 1987). Their prescriptions cost Medicare Part D more than their services did: $483,387 for 297 claims, against $45,388 paid for services in 2024. Pfizer Inc. reported $16.94 in payments in 2024, mostly food and beverage.

Overview

NPI	1134125156
Status	Active
Entity type	Individual
Credential	D.O.
Sole proprietor	No
NPI issued	Jun 23, 2005
Last updated in NPPES	May 15, 2019

Specialties and licenses

Taxonomy	Code	License	State
Internal Medicine, Hematology & Oncology Primary	207RH0003X	25MB05249800	NJ

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 - Hematology/Oncology (NJ)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	278
Services billed	675 across 15 procedure codes
Paid by Medicare	$45,388

Part D prescriptions in 2024

Prescriptions (claims)	297 · 520 30-day fills
Patients	57
Total drug cost	$483,387
Generic share	61% of claims

Medicare sources and data years

Education and affiliations

Medical school	University of New England, College of Osteo Medicine
Graduation year	1987
Medicare specialty	Hematology/Oncology
Secondary specialties	Internal Medicine
Telehealth	Offers telehealth