Internal Medicine Doctors in Illinois
Data updated monthly · Last refresh October 2026
7,189 Internal Medicine providers practice in Illinois, including 1,260 (18%) offering telehealth. The largest concentration is in Chicago. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
7,189providers
1,260telehealth
Chicagotop city
Internal Medicine by city in Illinois
Choose a city to see providers there.
Internal Medicine providers in Illinois
Listed by city, largest first. 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. 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 Dr. Mary King, MDNaperville, IL · No drug or device payments recorded (2025) ·
(630) 717-8707 Dr. Matthew Strauch, D.O.Naperville, IL · $1,512 in drug and device payments (2025) · Telehealth ·
(630) 646-5800 Dr. Naila Khurshid, M.D.Naperville, IL · $735 in drug and device payments (2025) · Telehealth ·
(630) 527-6390 Dr. Naira Hashmi, MDNaperville, IL · $146 in drug and device payments (2025) · Telehealth ·
(630) 961-2710 Dr. Narendra Garg, M.D.Naperville, IL · No drug or device payments recorded (2025) ·
(630) 369-6644 Dr. Nazish Ekram, M.D.Naperville, IL · $6,935 in drug and device payments (2025) ·
(630) 348-3840 Dr. Peter Furey, M.D.Naperville, IL · No drug or device payments recorded (2025) · Telehealth ·
(331) 732-4500 Dr. Prameela Chunduru, MDNaperville, IL · $137 in drug and device payments (2025) · Telehealth ·
(630) 264-8540 Dr. Pranav Tailor, M.D.Naperville, IL · No drug or device payments recorded (2025) ·
(630) 527-3000 Dr. Rachit Marwaha, M.DNaperville, IL · $2,177 in drug and device payments (2025) · Telehealth ·
(630) 527-6390 Dr. Rajiv Vasavada, MDNaperville, IL · $88 in drug and device payments (2025) · Telehealth ·
(630) 933-1700 Dr. Rohini Bhat, MDNaperville, IL · $113 in drug and device payments (2025) · Telehealth ·
(630) 646-6200 Dr. Sandeep Kalra, M.D.Naperville, IL · $47 in drug and device payments (2025) ·
(630) 527-6390 Dr. Shivani Kiriluk, D.O.Naperville, IL · $124 in drug and device payments (2025) · Telehealth ·
(630) 527-6450 Dr. Siya Nedumgottil, MDNaperville, IL · No drug or device payments recorded (2025) ·
(630) 717-8707 Dr. Sonal Shah-rhodes, MDNaperville, IL · $1,028 in drug and device payments (2025) · Telehealth ·
(630) 717-8707 Dr. Sunita KoulNaperville, IL · No drug or device payments recorded (2025) ·
(630) 961-1341 Conditions Internal Medicine providers in 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 Illinois?There are 7,189 Internal Medicine providers with active NPI records practicing in Illinois, according to federal NPPES data refreshed monthly.
Do Internal Medicine providers in Illinois offer telehealth?Yes. 1,260 of the 7,189 Internal Medicine providers in Illinois (about 18%) report offering telehealth services in CMS data.
Which cities in Illinois have the most Internal Medicine providers?Chicago (2,841), Maywood (252), Springfield (196) have the highest concentration of Internal Medicine providers in Illinois.
How many Internal Medicine providers in Illinois received drug or device company payments?2,137 of 7,189 Internal Medicine providers in Illinois (30%) 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 Illinois treat?Internal Medicine providers 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 counts and profiles 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.
Do most Internal Medicine Doctors in Illinois work in independent practices or large health systems?Among 3,097 Internal Medicine Doctors in Illinois enrolled in Medicare, 22% bill through a solo or small practice with fewer than 10 clinicians, 10% through a mid-size group of 10 to 99, and 68% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Internal Medicine Doctors in Illinois work at?According to CMS facility affiliation records, the Illinois hospitals where the most Internal Medicine Doctors hold privileges are Northwestern Medicine Central Dupage Hospital in Winfield; Northshore University Healthsystem - Evanston Hospital in Evanston; Northwestern Memorial Hospital in Chicago.
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