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. Susan Kim, MDNaperville, IL · $1,393 in drug and device payments (2025) · Telehealth ·
(630) 961-4155 Dr. Timothy Tyrrell, MDNaperville, IL · No drug or device payments recorded (2025) ·
(630) 527-5575 Dr. Tina Bhargava, M.D.Naperville, IL · $23 in drug and device payments (2025) ·
(630) 527-5000 Dr. Tobby Mathew, M.D.Naperville, IL · $529 in drug and device payments (2025) · Telehealth ·
(630) 717-8707 Dr. William Mollohan, D.O.Naperville, IL · $56 in drug and device payments (2025) · Telehealth ·
(630) 548-5936 Dr. Yumna Ahmad, MDNaperville, IL · No drug or device payments recorded (2025) · Telehealth ·
(630) 646-6200 Dr. Adel Mouradi, MDNew Lenox, IL · No drug or device payments recorded (2025) ·
(815) 300-1100 Dr. Ahmed Hussain, MDNew Lenox, IL · $788 in drug and device payments (2025) · Telehealth ·
(815) 741-3532 Dr. Aparna Pai, M.D.New Lenox, IL · $424 in drug and device payments (2025) ·
(630) 767-9755 Dr. Ashif Molla, MDNew Lenox, IL · No drug or device payments recorded (2025) ·
(708) 478-7201 Dr. Daniel Ramirez, M.D.New Lenox, IL · $19 in drug and device payments (2025) ·
(815) 727-4292 Dr. Deepak BakaneNew Lenox, IL · $397 in drug and device payments (2025) ·
(815) 462-1200 Dr. Firas Aubeid, M.D.New Lenox, IL · $935 in drug and device payments (2025) · Telehealth ·
(815) 456-8892 Dr. Imran Akhtar, D.ONew Lenox, IL · No drug or device payments recorded (2025) ·
(815) 300-1100 Dr. Jose Penaherrera, M.D.New Lenox, IL · $49 in drug and device payments (2025) ·
(815) 727-4292 Dr. M Ghaith Mulki, M.D.New Lenox, IL · No drug or device payments recorded (2025) · Telehealth ·
(815) 717-8737 Dr. Ramaraja Yalavarthi, M.D.New Lenox, IL · No drug or device payments recorded (2025) ·
(815) 300-1450 Dr. Wakas Ahmad, D.O.New Lenox, IL · No drug or device payments recorded (2025) ·
(815) 300-1100 Dr. Zafer Jawich, M.D.New Lenox, IL · No drug or device payments recorded (2025) · Telehealth ·
(815) 717-8737 Dr. Amy Herman, M.DNiles, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 583-1000 Dr. Bruce Hertz, MDNiles, IL · No drug or device payments recorded (2025) ·
(847) 297-2181 Dr. Camelia Pop, M.D.Niles, IL · $85 in drug and device payments (2025) · Telehealth ·
(847) 583-1000 Dr. Charles Brikha, M.D.Niles, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 692-5206 Dr. Fanan Falouji, M.D.Niles, IL · No drug or device payments recorded (2025) ·
(847) 903-4986 Dr. Fatima Mohiuddin, M.D.Niles, IL · No drug or device payments recorded (2025) ·
(847) 390-7122 Dr. Indira Nair, M.D., S.C.Niles, IL · No drug or device payments recorded (2025) ·
(847) 873-9367 Dr. James Poulos, MDNiles, IL · No drug or device payments recorded (2025) ·
(847) 647-1771 Dr. John Oh, M.D.Niles, IL · $1,352 in drug and device payments (2025) · Telehealth ·
(847) 375-8282 Dr. Kirill Zhadovich, M.D.Niles, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 825-0800 Dr. Kyong Oh, M.D.Niles, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 375-8181 Dr. Lawrence Weiner, M.D. Dr. Leonard Siedband, M.D.Niles, IL · No drug or device payments recorded (2025) ·
(847) 663-9700 Dr. Maria Victoria Vela, MDNiles, IL · No drug or device payments recorded (2025) ·
(847) 720-3504 Dr. Prasanna Nair, M.D.Niles, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 583-1000 Dr. Raymon Zaya, MDNiles, IL · No drug or device payments recorded (2025) ·
(773) 631-2223 Dr. Shilpa Joglekar, M.D. Dr. Sreedevi Sodanapalli, MDNiles, IL · No drug or device payments recorded (2025) ·
(847) 720-3504 Dr. Anand Oroskar, M.D.Normal, IL · No drug or device payments recorded (2025) ·
(309) 268-3598 Dr. Bijoy Kar, M.D.Normal, IL · No drug or device payments recorded (2025) ·
(309) 268-3598 Dr. Caroline Halperin, D.O.Normal, IL · $2,648 in drug and device payments (2025) ·
(309) 451-2920 Dr. Daniel Nwankwo, M.D.Normal, IL · No drug or device payments recorded (2025) ·
(309) 268-3598 Dr. Denise Mcguffin, MDNormal, IL · No drug or device payments recorded (2025) · Telehealth ·
(309) 454-1400 Dr. Enrique Martinez Trevino, M.D.Normal, IL · No drug or device payments recorded (2025) ·
(309) 268-3598 Dr. Glenn Weiss, MDNormal, IL · No drug or device payments recorded (2025) ·
(309) 438-2956 Dr. Gurpreet Singh, M.DNormal, IL · No drug or device payments recorded (2025) ·
(309) 268-3589 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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