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Leon Frederick O'Neill IV, DO

NPI 1275723736ActiveIndividual· Internal Medicine, Cardiovascular Disease· Eatontown, NJ

Internal Medicine, Cardiovascular Disease (DO) in Eatontown, New Jersey, trained at Philadelphia College of Osteopathic Medicine (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $1,125,596 for 6,164 claims, against $333,801 paid for services in 2024. Amgen Inc. was the largest of 12 companies reporting payments in 2025, $472.55 in all, mostly food and beverage.

Overview

NPI1275723736
StatusActive
Entity typeIndividual
CredentialDO
Sole proprietorNo
NPI issuedJul 30, 2007
Last updated in NPPESApr 9, 2024
Certified by providerApr 9, 2024

Specialties and licenses

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Nov 10, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026No match—
New York OMIG · Nov 11, 2026No match—
Ohio Medicaid · Nov 11, 2026No match—
Pennsylvania Medicheck · Nov 11, 2026No match—
Washington HCA · Nov 11, 2026No match—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)Enrolled Practitioner - Cardiovascular Disease (Cardiology) (NJ); Practitioner - Cardiovascular Disease (Cardiology) (VA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients1,453
Services billed4,688 across 44 procedure codes
Paid by Medicare$333,801

Part D prescriptions in 2024

Prescriptions (claims)6,164 · 15,772 30-day fills
Patients718
Total drug cost$1,125,596
Generic share84% of claims

Medicare sources and data years

Education and affiliations

Medical schoolPhiladelphia College of Osteopathic Medicine
Graduation year2005
Medicare specialtyCardiovascular Disease (Cardiology)

Medical groups

Hospital affiliations

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$472.55 · 22 payments from 12 companies
  • 2024$196.82 · 9 payments from 6 companies

Top paying companies in 2025

What the 2025 payments were for

  • Food and Beverage$472.55 · 22 payments

Receiving payments does not imply wrongdoing. What Open Payments covers ·original records

Other cardiologists in Eatontown

All 24 cardiologists in Eatontown · All cardiologists in New Jersey