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. Claire Kenneally, M.D.Winnetka, IL · $12,182 in drug and device payments (2025) · Telehealth ·
(847) 441-6868 Dr. David Donnersberger, MDWinnetka, IL · $219 in drug and device payments (2025) · Telehealth ·
(847) 441-6888 Dr. Douglas Cleary, MDWinnetka, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 446-8790 Dr. Eleanor Smith, MDWinnetka, IL · $392 in drug and device payments (2025) · Telehealth ·
(847) 441-6869 Dr. Jeanne Farley-li, M.D.Winnetka, IL · No drug or device payments recorded (2025) ·
(847) 441-6888 Dr. John Croghan, M.D.Winnetka, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 840-1470 Dr. Kristi Tough Desapri, M.D.Winnetka, IL · $67,138 in drug and device payments (2025) ·
(847) 999-7171 Dr. Patrick Logan, MDWinnetka, IL · No drug or device payments recorded (2025) ·
(847) 441-6869 Dr. Richard Stern, M.D.Winnetka, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 986-6770 Dr. Robert Magrisso, MDWinnetka, IL · No drug or device payments recorded (2025) ·
(847) 441-6867 Dr. Robin Wind, M.D.Winnetka, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 446-1112 Dr. Roman Mandzij, DOWinnetka, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 501-4060 Dr. Santiago Candocia, M.D.Winnetka, IL · $33 in drug and device payments (2025) · Telehealth ·
(847) 986-6770 Dr. Thomas Stern, MDWinnetka, IL · No drug or device payments recorded (2025) ·
(847) 501-4060 Dr. Walter Grobelny, M.D.Winnetka, IL · No drug or device payments recorded (2025) ·
(847) 446-1066 Dr. Sunita Narang, M.D.Wonder Lake, IL · No drug or device payments recorded (2025) ·
(815) 728-0444 Dr. Ashok Dholakia, MDWoodridge, IL · $728 in drug and device payments (2025) · Telehealth ·
(331) 732-7100 Dr. Carolyn Rea, MDWoodridge, IL · No drug or device payments recorded (2025) ·
(630) 716-7510 Dr. Mario Prete, MDWoodridge, IL · No drug or device payments recorded (2025) ·
(630) 716-7510 Dr. Mary Anne Damiani, D.O.Woodridge, IL · $344 in drug and device payments (2025) · Telehealth ·
(331) 732-7100 Dr. Pranjal Shah, M.DWoodridge, IL · $18 in drug and device payments (2025) ·
(630) 910-1177 Dr. Roberto Ramirez, M.D.Woodridge, IL · $1,690 in drug and device payments (2025) ·
(331) 732-7100 Dr. Sara Doss, M.D.Woodridge, IL · No drug or device payments recorded (2025) · Telehealth ·
(331) 732-7100 Dr. Shanmugavelayutham Ramasamy, M.DWoodridge, IL · No drug or device payments recorded (2025) ·
(630) 730-2159 Dr. Umang Patel, M.DWoodridge, IL · $1,291 in drug and device payments (2025) · Telehealth ·
(630) 910-1177 Dr. George Dirkers, M.D.Wood River, IL · No drug or device payments recorded (2025) ·
(618) 251-5202 Dr. Bibiano Ronquillo, MDWoodstock, IL · No drug or device payments recorded (2025) ·
(815) 337-7100 Dr. Erin Davis-delay, M.D.Woodstock, IL · No drug or device payments recorded (2025) · Telehealth ·
(815) 338-6600 Dr. Joseph Emmons, M.D.Woodstock, IL · No drug or device payments recorded (2025) · Telehealth ·
(815) 338-6600 Dr. Karen Judy Thome, MDWoodstock, IL · No drug or device payments recorded (2025) · Telehealth ·
(815) 338-6600 Dr. Kenneth Tomchik, MDWoodstock, IL · No drug or device payments recorded (2025) ·
(815) 338-6600 Dr. Mark Stolar, M.D.Woodstock, IL · No drug or device payments recorded (2025) · Telehealth ·
(815) 338-6600 Dr. Octavio Lopez, M.D.Worth, IL · No drug or device payments recorded (2025) ·
(708) 448-8899 Dr. Farah Malik, MDYorkville, IL · $69 in drug and device payments (2025) ·
(630) 553-2111 Dr. Haohua Yang, MDYorkville, IL · No drug or device payments recorded (2025) ·
(630) 553-3444 Dr. Sanjay Thakkar, M.D.Yorkville, IL · No drug or device payments recorded (2025) ·
(630) 882-6441 Dr. Harsha Kaza, MDZion, IL · No drug or device payments recorded (2025) ·
(847) 746-3752 Dr. Mohanad Joudeh, M.D.Zion, IL · $108 in drug and device payments (2025) · Telehealth ·
(847) 731-5050 Dr. Uday Paul, MDZion, IL · No drug or device payments recorded (2025) ·
(847) 360-4260 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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