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Ilya Isaakovich Fishman, M.D.

NPI 1346434578ActiveIndividual· Internal Medicine, Geriatric Medicine· Elk Grove Village, IL

Internal Medicine, Geriatric Medicine (M.D.) in Elk Grove Village, Illinois, licensed in IL, with an NPI issued in August 2007. Their prescriptions cost Medicare Part D more than their services did: $1,787,607 for 33,814 claims, against $161,948 paid for services in 2024. Pfizer Inc. was the largest of 5 companies reporting payments in 2025, $422.03 in all, mostly food and beverage. Lists Advocate Lutheran General Hospital and 3 other hospitals as hospital affiliations.

Overview

NPI1346434578
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorYes
NPI issuedAug 30, 2007
Last updated in NPPESApr 11, 2016

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine, Geriatric Medicine Primary207RG0300X036.118688IL
Internal Medicine207R00000X036.118688IL

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Oct 9, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 10, 2026No match—
New York OMIG · Nov 10, 2026No match—
Ohio Medicaid · Nov 10, 2026No match—
Pennsylvania Medicheck · Nov 10, 2026No match—
Washington HCA · Nov 10, 2026No match—

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

Medicare

Enrollment (PECOS)Enrolled Practitioner - Geriatric Medicine (IL)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients381
Services billed2,183 across 29 procedure codes
Paid by Medicare$161,948

Part D prescriptions in 2024

Prescriptions (claims)33,814 · 39,351 30-day fills
Patients600
Total drug cost$1,787,607
Generic share89% of claims

Medicare sources and data years

Education and affiliations

Graduation year1998
Medicare specialtyGeriatric Medicine
Secondary specialtiesInternal Medicine

Hospital affiliations

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$422.03 · 17 payments from 5 companies
  • 2024$509.39 · 25 payments from 12 companies

Top paying companies in 2025

What the 2025 payments were for

  • Food and Beverage$422.03 · 17 payments

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

Other Internal Medicine, Geriatric Medicine providers in Elk Grove Village

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