Skip to content

Joel S. Leifheit, MD

NPI 1871696229ActiveIndividual· Internal Medicine· Peru, IL

Internal Medicine (MD) in Peru, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $864,553 for 8,708 claims, against $88,909 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 8 companies reporting payments in 2025, $749.57 in all, mostly food and beverage.

Overview

NPI1871696229
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorYes
NPI issuedSep 7, 2006
Last updated in NPPESFeb 14, 2011

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000X036093954IL
Pediatrics208000000X036093954IL

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 - Internal Medicine (IL)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients332
Services billed997 across 15 procedure codes
Paid by Medicare$88,909

Part D prescriptions in 2024

Prescriptions (claims)8,708 · 17,352 30-day fills
Patients428
Total drug cost$864,553
Generic share87% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Graduation year1999
Medicare specialtyInternal Medicine
Secondary specialtiesPediatric Medicine

Hospital affiliations

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$749.57 · 39 payments from 8 companies
  • 2024$969.85 · 60 payments from 12 companies

Top paying companies in 2025

What the 2025 payments were for

  • Food and Beverage$749.57 · 39 payments

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

Other internal medicine physicians in Peru

All internal medicine physicians in Illinois