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. Guillermo Reyes Martinez, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 766-4949 Dr. Guohui RenChicago, IL · No drug or device payments recorded (2025) ·
(312) 942-5000 Dr. Gurbachan Chadha, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 287-2200 Dr. Gustavo Da Silva Borba, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(773) 257-5701 Dr. Gustavo Espinoza Mercado, MDChicago, IL · $202 in drug and device payments (2025) ·
(773) 257-5077 Dr. Guy Olson, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 942-5000 Dr. Guy Rowley, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(773) 725-7557 Dr. Gwenn Garmon, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(312) 569-7354 Dr. Habib El-khoury, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 702-6840 Dr. Hadassa Holzapfel, MDChicago, IL · No drug or device payments recorded (2025) ·
(866) 600-2273 Dr. Hadeel AlfarChicago, IL · No drug or device payments recorded (2025) ·
(312) 864-6000 Dr. Hafiz Muhammad Waqar Younas, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 564-5225 Dr. Halder Abozait, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 257-5701 Dr. Haley Herman, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 942-5000 Dr. Haley ZimmermanChicago, IL · No drug or device payments recorded (2025) ·
(312) 942-5000 Dr. Hamed Rahmani Youshanlouei, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 864-6000 Dr. Hamid RahmanChicago, IL · No drug or device payments recorded (2025) ·
(312) 766-4949 Dr. Hamilcar Intengan, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 487-5224 Dr. Hamza Ishfaq, M.DChicago, IL · No drug or device payments recorded (2025) ·
(312) 766-4949 Dr. Hani ShayyaChicago, IL · No drug or device payments recorded (2025) ·
(773) 702-6840 Dr. Haniya Saeed, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 567-2000 Dr. Hannah JohnstonChicago, IL · No drug or device payments recorded (2025) ·
(773) 702-6840 Dr. Hannah Lewis, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 942-7080 Dr. Hannah MatthewsChicago, IL · No drug or device payments recorded (2025) · Telehealth ·
(773) 702-6840 Dr. Hannah O'hagan, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 702-6840 Dr. Hannah Roth, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 795-0232 Dr. Hannah SilvermanChicago, IL · No drug or device payments recorded (2025) ·
(312) 942-7100 Dr. Hannah VaneveryChicago, IL · No drug or device payments recorded (2025) ·
(773) 702-6840 Dr. Hanna Mckown, DOChicago, IL · No drug or device payments recorded (2025) ·
(866) 600-7232 Dr. Hanna Vollbrecht, MDChicago, IL · $284 in drug and device payments (2025) ·
(773) 702-9660 Dr. Hans Mautong Vasquez, M.DChicago, IL · $147 in drug and device payments (2025) ·
(312) 864-6000 Dr. Haralambos Hatzidimitriadis, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 658-2300 Dr. Hardik Dand, DOChicago, IL · $237 in drug and device payments (2025) ·
(773) 878-8200 Dr. Haresh Sawlani, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(773) 205-0800 Dr. Harigopal Sandhyavenu, MDChicago, IL · $122 in drug and device payments (2025) ·
(773) 878-8700 Dr. Harita ShahChicago, IL · No drug or device payments recorded (2025) · Telehealth ·
(888) 824-0200 Dr. Harold EulienChicago, IL · No drug or device payments recorded (2025) ·
(773) 525-4740 Dr. Harold Jaimes, M.D.Chicago, IL · $56 in drug and device payments (2025) · Telehealth ·
(773) 395-4600 Dr. Harold Rahming, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 918-4700 Dr. Harpreet Singh, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 257-5077 Dr. Harris AvgoustiChicago, IL · No drug or device payments recorded (2025) ·
(312) 503-7975 Dr. Harry Saag, MDChicago, IL · No drug or device payments recorded (2025) · Telehealth ·
(888) 805-0085 Dr. Harshada Santosh Keluskar, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 864-6000 Dr. Harshit DuaChicago, IL · No drug or device payments recorded (2025) ·
(773) 878-8700 Dr. Hassam ShahChicago, IL · $591 in drug and device payments (2025) ·
(312) 864-6000 Dr. Hassan Muhammad, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(312) 864-6000 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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