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Steven M. Zak, MD

NPI 1861467755ActiveIndividual· Psychiatry & Neurology, Neurology· Northbrook, IL

Psychiatry & Neurology, Neurology (MD) in Northbrook, Illinois, trained at Northwestern University Feinberg Medical School (class of 1981). Medicare paid $93,324 for services to 583 patients in 2024.

Overview

NPI1861467755
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorYes
NPI issuedFeb 22, 2006
Last updated in NPPESJan 24, 2024
Certified by providerJan 24, 2024

Specialties and licenses

TaxonomyCodeLicenseState
Psychiatry & Neurology, Neurology Primary2084N0400X036070165IL

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 - Neurology (IL)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients583
Services billed2,218 across 16 procedure codes
Paid by Medicare$93,324

Medicare sources and data years

Education and affiliations

Medical schoolNorthwestern University Feinberg Medical School
Graduation year1981
Medicare specialtyNeurology

Medical group

Hospital affiliations

Source: CMS Care Compare

Industry payments (Open Payments)

None reported for 2025 or 2024.

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

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