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. Magdalena Hope, M.D.Glen Ellyn, IL · $173 in drug and device payments (2025) · Telehealth ·
(630) 790-1792 Dr. Mary Kungl, M.D.Glen Ellyn, IL · $74 in drug and device payments (2025) · Telehealth ·
(630) 469-9200 Dr. Mohit Gupta, M.D.Glen Ellyn, IL · $21 in drug and device payments (2025) · Telehealth ·
(630) 790-1792 Dr. Norman Decker, M.D.Glen Ellyn, IL · $90 in drug and device payments (2025) · Telehealth ·
(630) 790-1792 Dr. Rita Herzing, M.D.Glen Ellyn, IL · $189 in drug and device payments (2025) · Telehealth ·
(630) 790-1792 Dr. Stephen Gawne, MDGlen Ellyn, IL · No drug or device payments recorded (2025) ·
(630) 384-6330 Dr. Thomas Marshall, M.D.Glen Ellyn, IL · No drug or device payments recorded (2025) ·
(630) 790-1792 Dr. Walter Briney, M.D.Glen Ellyn, IL · No drug or device payments recorded (2025) ·
(630) 469-9200 Dr. Alan Frydman, MDGlenview, IL · No drug or device payments recorded (2025) ·
(847) 998-4100 Dr. Amber Douglas, DOGlenview, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 832-6500 Dr. Anh Si Le, DOGlenview, IL · No drug or device payments recorded (2025) ·
(847) 535-7157 Dr. Christopher Ho, DOGlenview, IL · $125 in drug and device payments (2025) · Telehealth ·
(847) 901-5200 Dr. Claudia Petersen, MDGlenview, IL · $93 in drug and device payments (2025) ·
(847) 901-5200 Dr. Colleen Nugent, MDGlenview, IL · $193 in drug and device payments (2025) ·
(847) 998-0010 Dr. Daniel Hidaka, M.D.Glenview, IL · $60 in drug and device payments (2025) ·
(855) 947-7371 Dr. David Lerner, MDGlenview, IL · No drug or device payments recorded (2025) ·
(847) 729-2541 Dr. Debjani Roy, M.D.Glenview, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 657-3540 Dr. Deepali Ahluwalia, M.DGlenview, IL · No drug or device payments recorded (2025) ·
(847) 393-3227 Dr. Eladio Vargas, MDGlenview, IL · No drug or device payments recorded (2025) ·
(847) 724-4536 Dr. Emily TuchmanGlenview, IL · $219 in drug and device payments (2025) · Telehealth ·
(847) 535-7157 Dr. Evan Lipkis, MDGlenview, IL · $694 in drug and device payments (2025) ·
(847) 729-8833 Dr. Frank Weschler, M.D.Glenview, IL · $237 in drug and device payments (2025) ·
(847) 901-5200 Dr. Gabriel Berlin, M.D.Glenview, IL · $36 in drug and device payments (2025) · Telehealth ·
(847) 998-5700 Dr. George Tsourdinis, MDGlenview, IL · $439 in drug and device payments (2025) ·
(847) 864-3278 Dr. Greg Denenberg, MDGlenview, IL · $3,028 in drug and device payments (2025) · Telehealth ·
(847) 901-5200 Dr. Gregory Wallman, DOGlenview, IL · $149 in drug and device payments (2025) · Telehealth ·
(847) 901-5200 Dr. Helen Eliopoulos, MDGlenview, IL · No drug or device payments recorded (2025) ·
(224) 425-0098 Dr. Herschel Weller, MDGlenview, IL · No drug or device payments recorded (2025) ·
(847) 998-4100 Dr. Irina Tutunikov, D.O.Glenview, IL · No drug or device payments recorded (2025) ·
(847) 232-9932 Dr. Janet Siel, MDGlenview, IL · No drug or device payments recorded (2025) ·
(847) 998-4100 Dr. Jasmin Bir, M.D.Glenview, IL · $27 in drug and device payments (2025) · Telehealth ·
(847) 535-7157 Dr. Jeffrey Trimark, MDGlenview, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 503-2222 Dr. Johan Lane, MDGlenview, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 832-6500 Dr. John Revis, MDGlenview, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 832-6500 Dr. Katherine Lewinski, D.O.Glenview, IL · $125 in drug and device payments (2025) · Telehealth ·
(847) 901-5200 Dr. Kaveh Safavi, M.D.Glenview, IL · No drug or device payments recorded (2025) ·
(847) 702-4010 Dr. Kavitha Srinivasan, MDGlenview, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 832-6500 Dr. Laurel Doherty, MDGlenview, IL · $16 in drug and device payments (2025) ·
(847) 729-2541 Dr. Leonardo Vargas, M.D.Glenview, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 998-0120 Dr. Lynn Katten, MDGlenview, IL · No drug or device payments recorded (2025) ·
(847) 467-7423 Dr. Lynn Martin, MDGlenview, IL · No drug or device payments recorded (2025) ·
(847) 729-2541 Dr. Margaret Thomas, M.D.Glenview, IL · No drug or device payments recorded (2025) ·
(847) 467-7423 Dr. Maria Michelotti, MDGlenview, IL · No drug or device payments recorded (2025) ·
(847) 998-4100 Dr. Maria Wojnarska, M.D.Glenview, IL · No drug or device payments recorded (2025) ·
(847) 559-0596 Dr. Martha Millar, MDGlenview, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 901-5200 Dr. Mary Shapiro, M.D.Glenview, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 832-6500 Dr. Megan KosirogGlenview, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 535-7157 Dr. Michael Caughron, M.D.Glenview, IL · $45 in drug and device payments (2025) ·
(847) 901-5200 Dr. Nancy Mantich, MDGlenview, IL · No drug or device payments recorded (2025) ·
(847) 832-6500 Dr. Nancy Novotny, M.D.Glenview, IL · No drug or device payments recorded (2025) ·
(847) 294-5480 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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