HealthcareDiscovery.AI / Doctors / Illinois / Willowbrook / Internal Medicine

Internal Medicine in Willowbrook, Illinois

Data updated monthly · Last refresh September 2026

7 Internal Medicine providers practice in Willowbrook. Listings are drawn from federal public records and are not endorsements.

Internal Medicine providers in Willowbrook

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. Alma Gonzalez, MD
Willowbrook, IL · No drug or device payments recorded (2025) · (630) 805-2430
Dr. Anthony Delorenzo, D.O.
Willowbrook, IL · $705 in drug and device payments (2025) · Telehealth · (630) 655-9555
Dr. Daniel Grzegorek, D.O.
Willowbrook, IL · No drug or device payments recorded (2025) · Telehealth · (630) 325-4049
Dr. Muhammad Ali, MD
Willowbrook, IL · $25 in drug and device payments (2025) · (855) 554-2545
Dr. Rathna Yallapragada, M.D.
Willowbrook, IL · $95 in drug and device payments (2025) · (630) 323-8595
Dr. Roland Borrasi, MD
Willowbrook, IL · No drug or device payments recorded (2025) · (815) 886-8037
Dr. Shirley Stilson, M.D.
Willowbrook, IL · No drug or device payments recorded (2025) · (949) 370-7225

Conditions Internal Medicine providers in Willowbrook, Illinois commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Internal Medicine providers are in Willowbrook, Illinois?

There are 7 Internal Medicine providers with active NPI records practicing in Willowbrook, according to federal NPPES data refreshed monthly.

What conditions do Internal Medicine providers in Willowbrook treat?

Internal Medicine providers in Willowbrook commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.

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 Willowbrook Internal 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.