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. Gene OsuohaChicago, IL · No drug or device payments recorded (2025) ·
(312) 996-7836 Dr. Geoffrey Smith, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(773) 702-1447 Dr. Geoffrey Stetson, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(312) 996-4242 Dr. George Czajkowski, M.D.Chicago, IL · No drug or device payments recorded (2025) · Telehealth ·
(773) 275-7700 Dr. George Karabelas, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 658-2300 Dr. George KidessChicago, IL · No drug or device payments recorded (2025) ·
(773) 702-6840 Dr. George Mankarious, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 564-5225 Dr. George Nguyen, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(714) 312-8707 Dr. George Nissan, DOChicago, IL · $14,871 in drug and device payments (2025) · Telehealth ·
(773) 388-6390 Dr. George Sianis, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 478-5600 Dr. George Urban, MDChicago, IL · $31,787 in drug and device payments (2025) · Telehealth ·
(773) 388-6390 Dr. Georg Gussak, MD, MSCChicago, IL · $749 in drug and device payments (2025) ·
(773) 702-9461 Dr. Gerald Berkowitz, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 564-5711 Dr. Gerald Cooke, MDChicago, IL · No drug or device payments recorded (2025) ·
(708) 444-2310 Dr. Gerald Lumer, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(312) 322-0271 Dr. Geralynn Kahn, MD,MPHChicago, IL · No drug or device payments recorded (2025) ·
(312) 738-6170 Dr. Gerard SalameChicago, IL · No drug or device payments recorded (2025) ·
(703) 434-0711 Dr. Gerasim Tikoff, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(312) 294-9903 Dr. Giancarlo Saldana, MDChicago, IL · $534 in drug and device payments (2025) ·
(773) 702-6840 Dr. Gianfranco Bittar Carlini, MD Dr. Gideon Maresky, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 342-6200 Dr. Gilberto Zavala, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 942-6647 Dr. Gilgamish Maloul, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 942-7100 Dr. Gillian Coffey, MDChicago, IL · No drug or device payments recorded (2025) ·
(502) 715-1558 Dr. Girija Kumar, M.D.Chicago, IL · $189 in drug and device payments (2025) · Telehealth ·
(773) 257-6552 Dr. Gloria Rho, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(312) 942-5352 Dr. Glynis Vashi, MDChicago, IL · $43 in drug and device payments (2025) · Telehealth ·
(847) 746-4358 Dr. Godson Aronu, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 665-3000 Dr. Godwin D'souza, M.D.Chicago, IL · $2,299 in drug and device payments (2025) · Telehealth ·
(773) 202-9622 Dr. Golbarg Moaddab, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(773) 665-3000 Dr. Gopika Chandra, MD, PHDChicago, IL · $15 in drug and device payments (2025) · Telehealth ·
(773) 549-7757 Dr. Grace Hansen, MDChicago, IL · $145 in drug and device payments (2025) ·
(866) 600-2273 Dr. Grace Lee, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 942-5495 Dr. Grant Whitmer, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 503-7975 Dr. Grant ZhaoChicago, IL · No drug or device payments recorded (2025) ·
(312) 766-4949 Dr. Graylynn Oatess, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 942-5000 Dr. Grazyna Siwy, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(312) 864-6000 Dr. Gregorio Rosenstein, MDChicago, IL · $435 in drug and device payments (2025) ·
(773) 767-4359 Dr. Gregory Brisson, M.D.Chicago, IL · No drug or device payments recorded (2025) · Telehealth ·
(312) 926-6146 Dr. Gregory Clarke, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(312) 236-3175 Dr. Gregory Rauch, M.D.Chicago, IL · $836 in drug and device payments (2025) ·
(773) 388-1600 Dr. Gregory Vachon, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(312) 285-7678 Dr. Gregory Wilson, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(312) 864-0394 Dr. Greg Papiez, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(312) 942-5000 Dr. Gretchen Hoyer, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 926-2000 Dr. Gretchen Weiss, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 641-2586 Dr. Gretel Ruiz Jorge, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(847) 220-4103 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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