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Eric J. Chuang, M.D.

NPI 1124140207ActiveIndividual· Internal Medicine· Chicago, IL

Internal Medicine (M.D.) in Chicago, Illinois, trained at Northwestern University Feinberg Medical School (class of 1996). In 2024 Medicare paid $2,466,776 for 2,598 patients, and Part D covered 46,643 of their prescriptions, 82% of them generic. Abbott Laboratories was the largest of 3 companies reporting payments in 2025, $265.09 in all, mostly food and beverage.

Overview

NPI1124140207
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorNo
NPI issuedApr 6, 2007
Last updated in NPPESJul 29, 2016

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000X036100086IL

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 patients2,598
Services billed33,055 across 41 procedure codes
Paid by Medicare$2,466,776

Part D prescriptions in 2024

Prescriptions (claims)46,643 · 46,861 30-day fills
Patients1,316
Total drug cost$3,493,833
Generic share82% of claims

Medicare sources and data years

Education and affiliations

Medical schoolNorthwestern University Feinberg Medical School
Graduation year1996
Medicare specialtyInternal Medicine

Medical groups

Hospital affiliations

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$265.09 · 3 payments from 3 companies
  • 2024$151.03 · 2 payments from 2 companies

Top paying companies in 2025

CompanyAmountPayments
Abbott Laboratories$180.681
Angiodynamics, Inc.$69.501
Solventum Corporation$14.911

What the 2025 payments were for

  • Food and Beverage$265.09 · 3 payments

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

Other internal medicine physicians in Chicago

All 3,299 internal medicine physicians in Chicago · All internal medicine physicians in Illinois