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Matthew J. Zimmerman, MD

NPI 1154474435ActiveIndividual· Internal Medicine, Cardiovascular Disease· Lexington, KY

Internal Medicine, Cardiovascular Disease (MD) in Lexington, Kentucky, trained at University of Louisville School of Medicine (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $520,724 for 2,574 claims, against $162,907 paid for services in 2024. Pfizer Inc. was the largest of 5 companies reporting payments in 2025, $214.78 in all, mostly food and beverage.

Overview

NPI1154474435
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedJan 19, 2007
Last updated in NPPESSep 8, 2023
Certified by providerSep 8, 2023

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) (KY)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients1,564
Services billed3,616 across 64 procedure codes
Paid by Medicare$162,907

Part D prescriptions in 2024

Prescriptions (claims)2,574 · 6,206 30-day fills
Patients525
Total drug cost$520,724
Generic share81% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of Louisville School of Medicine
Graduation year2001
Medicare specialtyCardiovascular Disease (Cardiology)

Medical group

Hospital affiliations

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$214.78 · 10 payments from 5 companies
  • 2024$162.72 · 9 payments from 6 companies

Top paying companies in 2025

What the 2025 payments were for

  • Food and Beverage$214.78 · 10 payments

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

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