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Emergency Medicine in Oakbrook Terrace, Illinois

Data updated monthly · Last refresh September 2026

3 Emergency Medicine providers practice in Oakbrook Terrace. Listings are drawn from federal public records and are not endorsements.

Emergency Medicine providers in Oakbrook Terrace

Listed alphabetically. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Benjamin Vonfischer, D.O.
Oakbrook Terrace, IL · $23 in drug and device payments (2025) · (630) 785-9100
Dr. Daniel Sullivan, MD
Oakbrook Terrace, IL · No drug or device payments recorded (2025) · (630) 785-9100
Dr. Kristopher Knopp, M.D.
Oakbrook Terrace, IL · $23 in drug and device payments (2025) · (630) 785-9100

Common questions

How many Emergency Medicine providers are in Oakbrook Terrace, Illinois?

There are 3 Emergency Medicine providers with active NPI records practicing in Oakbrook Terrace, according to federal NPPES data refreshed monthly.

Where does this data come from?

Provider records come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

All specialties in Oakbrook Terrace Emergency Medicine across Illinois

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory.