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Leonard A. Zalik, M.D

NPI 1689619728ActiveIndividual· Anesthesiology· Hinsdale, IL

Anesthesiology (M.D) in Hinsdale, Illinois, trained at Loyola University of Chicago, Stritch School of Medicine (class of 1984). Medicare paid $30,575 for services to 213 patients in 2024. Merck Sharp & Dohme LLC reported $28.90 in payments in 2025, mostly food and beverage.

Overview

NPI1689619728
StatusActive
Entity typeIndividual
CredentialM.D
Sole proprietorNo
NPI issuedJun 20, 2006
Last updated in NPPESJun 29, 2016

Specialties and licenses

TaxonomyCodeLicenseState
Anesthesiology Primary207L00000X036073153IL
Specialist174400000X036073153IL

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 - Anesthesiology (IL)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients213
Services billed242 across 52 procedure codes
Paid by Medicare$30,575

Medicare sources and data years

Education and affiliations

Medical schoolLoyola University of Chicago, Stritch School of Medicine
Graduation year1984
Medicare specialtyAnesthesiology

Medical group

Hospital affiliations

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$28.90 · 1 payment from 1 company
  • 2024$18.67 · 1 payment from 1 company

Top paying companies in 2025

CompanyAmountPayments
Merck Sharp & Dohme LLC$28.901

What the 2025 payments were for

  • Food and Beverage$28.90 · 1 payment

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

Other anesthesiologists in Hinsdale

All 21 anesthesiologists in Hinsdale · All anesthesiologists in Illinois