Internal Medicine in Naperville, Illinois
Data updated monthly · Last refresh September 2026
73 Internal Medicine providers practice in Naperville, and 56% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.
Internal Medicine providers in Naperville
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. Adam Schriedel, M.D.Naperville, IL · No drug or device payments recorded (2025) ·
(630) 527-5000 Dr. Alicia Lee, MDNaperville, IL · $100 in drug and device payments (2025) · Telehealth ·
(630) 961-4155 Dr. Alla Jusufi, MDNaperville, IL · $981 in drug and device payments (2025) · Telehealth ·
(630) 646-6200 Dr. Amish Doshi, M.D.Naperville, IL · No drug or device payments recorded (2025) · Telehealth ·
(630) 527-3000 Dr. Aristidis Hatzidimitriadis, MDNaperville, IL · $573 in drug and device payments (2025) ·
(630) 527-7780 Dr. Arun Kumar, MDNaperville, IL · $140 in drug and device payments (2025) ·
(630) 579-4668 Dr. Asima Doriwala, MDNaperville, IL · No drug or device payments recorded (2025) ·
(630) 717-8707 Dr. Audrey Geannopoulos, M.D.Naperville, IL · $159 in drug and device payments (2025) ·
(630) 717-8707 Dr. Ayesha Khan, MDNaperville, IL · $137 in drug and device payments (2025) ·
(630) 527-5000 Dr. Barbara Emery-stolzer, MDNaperville, IL · No drug or device payments recorded (2025) ·
(630) 646-6200 Dr. Barry Fischer, M.DNaperville, IL · No drug or device payments recorded (2025) ·
(630) 548-5936 Dr. Brian O'leary, MDNaperville, IL · $322 in drug and device payments (2025) · Telehealth ·
(630) 946-2565 Dr. Brian Schmitt, M.D.Naperville, IL · No drug or device payments recorded (2025) ·
(630) 717-6019 Dr. Carol Weinberg, MDNaperville, IL · No drug or device payments recorded (2025) · Telehealth ·
(630) 717-1771 Dr. Cathleen Cregier, APNNaperville, IL · No drug or device payments recorded (2025) ·
(630) 527-7780 Dr. Christine Amstadt, MDNaperville, IL · No drug or device payments recorded (2025) · Telehealth ·
(630) 355-5302 Dr. Cicily Jones, MDNaperville, IL · $2,619 in drug and device payments (2025) · Telehealth ·
(630) 355-4755 Dr. Constantine Wonais, MDNaperville, IL · No drug or device payments recorded (2025) ·
(630) 300-1125 Dr. Cynthia Manfredi, MDNaperville, IL · No drug or device payments recorded (2025) ·
(630) 420-5675 Dr. Douglas Tran, MDNaperville, IL · $307 in drug and device payments (2025) · Telehealth ·
(630) 527-7780 Dr. Erica BolanowskiNaperville, IL · $23 in drug and device payments (2025) ·
(630) 237-4500 Dr. Felix ObregonNaperville, IL · $620 in drug and device payments (2025) · Telehealth ·
(630) 966-2637 Dr. Francine Long, MDNaperville, IL · No drug or device payments recorded (2025) ·
(630) 300-1125 Dr. Gregory Trevino, MDNaperville, IL · $271 in drug and device payments (2025) · Telehealth ·
(630) 717-2630 Dr. Hardeep Arora, M.D.Naperville, IL · No drug or device payments recorded (2025) ·
(630) 585-0800 Dr. Harman GrewalNaperville, IL · $53 in drug and device payments (2025) ·
(630) 527-3000 Dr. Iffat Ahmed, D.O.Naperville, IL · $83,146 in drug and device payments (2025) · Telehealth ·
(630) 348-3840 Dr. James Collins, MDNaperville, IL · No drug or device payments recorded (2025) ·
(630) 355-6200 Dr. James Lengemann, MDNaperville, IL · $17 in drug and device payments (2025) ·
(630) 527-5000 Dr. Jason Dy, MDNaperville, IL · $2,131 in drug and device payments (2025) · Telehealth ·
(630) 646-5800 Dr. Jerome Hong, MDNaperville, IL · $166 in drug and device payments (2025) · Telehealth ·
(630) 961-4155 Dr. Johara Hassan, MDNaperville, IL · No drug or device payments recorded (2025) ·
(929) 491-1555 Dr. John Lee, M.D.Naperville, IL · $18,698 in drug and device payments (2025) ·
(630) 416-7766 Dr. John Saran, MDNaperville, IL · No drug or device payments recorded (2025) · Telehealth ·
(630) 527-5575 Dr. Joseph Sutherland, M.D.Naperville, IL · $467 in drug and device payments (2025) · Telehealth ·
(630) 717-8707 Dr. Kaihua Lai, M.D.Naperville, IL · $265 in drug and device payments (2025) · Telehealth ·
(630) 933-1700 Dr. Karim Tourk, M.D.Naperville, IL · No drug or device payments recorded (2025) · Telehealth ·
(800) 353-4980 Dr. Katarzyna ScigaczNaperville, IL · $344 in drug and device payments (2025) · Telehealth ·
(630) 526-4010 Dr. Katharyn Lupo, M.D.Naperville, IL · No drug or device payments recorded (2025) ·
(630) 922-2350 Dr. Katherine Pickett, MDNaperville, IL · No drug or device payments recorded (2025) ·
(630) 717-8707 Dr. Kenneth Vercelli, MDNaperville, IL · $592 in drug and device payments (2025) · Telehealth ·
(630) 717-8707 Dr. Khalda Abbasi, MDNaperville, IL · No drug or device payments recorded (2025) ·
(630) 416-2300 Dr. Krishna Bathina, MDNaperville, IL · $87 in drug and device payments (2025) · Telehealth ·
(630) 717-2630 Dr. Lata Nagpal, MDNaperville, IL · No drug or device payments recorded (2025) ·
(630) 961-2011 Dr. Linda Steeb, DONaperville, IL · No drug or device payments recorded (2025) · Telehealth ·
(630) 355-5302 Dr. Loveena Bouri, MDNaperville, IL · $166 in drug and device payments (2025) · Telehealth ·
(630) 717-2630 Dr. Maleeha Hashmi-basha, MDNaperville, IL · $185 in drug and device payments (2025) · Telehealth ·
(630) 717-2630 Dr. Manju Joseph, M.D.Naperville, IL · No drug or device payments recorded (2025) ·
(630) 527-3000 Dr. Mark Gomez, MDNaperville, IL · No drug or device payments recorded (2025) · Telehealth ·
(630) 527-5576 Dr. Mary Dea, DONaperville, IL · $899 in drug and device payments (2025) ·
(630) 646-6200 Conditions Internal Medicine providers in Naperville, 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.
- High blood pressure
- Type 2 diabetes
- High cholesterol
- Preventive care
- Chronic disease management
Common questions
How many Internal Medicine providers are in Naperville, Illinois?There are 73 Internal Medicine providers with active NPI records practicing in Naperville, according to federal NPPES data refreshed monthly.
How many Internal Medicine providers in Naperville received drug or device company payments?41 of 73 (56%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Internal Medicine providers in Naperville treat?Internal Medicine providers in Naperville 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 Naperville Internal Medicine across Illinois
