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. William O'rourke, MDLombard, IL · $26 in drug and device payments (2025) · Telehealth ·
(630) 387-6424 Dr. Yasmin Kagzi, M.DLombard, IL · $121 in drug and device payments (2025) · Telehealth ·
(331) 221-9001 Dr. Yoko Momoyama, MDLombard, IL · $426 in drug and device payments (2025) · Telehealth ·
(630) 627-4722 Dr. Aleksandra Popovic, MDLong Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Annette Olin, MDLong Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Asia Maqbool, M.DLong Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Brenda Affinati, M.D.Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Brenda Snyder, D.O.Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Brian Varghese, M.D.Long Grove, IL · $146 in drug and device payments (2025) ·
(847) 719-2220 Dr. David Kanarek, M.D.Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 634-2090 Dr. Dioma Udeoji, M.DLong Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Faiza Ahmed, MDLong Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Fatima Hyder, MDLong Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Helen Maciorowski, M.D.Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Irene Graziani, MD, PHDLong Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Jeffry Kreamer, D.O.Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Jocelyn De Jesus, MDLong Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Johnny Khamoo, MDLong Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Kelly Tan, M.D.Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Kevin Go, MDLong Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Khola Hai, MDLong Grove, IL · $145 in drug and device payments (2025) ·
(847) 719-2220 Dr. Kimberly Rosenthal, D.O..Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Lanis Kuyzin, M.D.Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Luisa Orrico, M.D.Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Mahjabeen Khan, MDLong Grove, IL · $48 in drug and device payments (2025) ·
(847) 719-2220 Dr. Marek Filipiuk, M.D.Long Grove, IL · $131 in drug and device payments (2025) ·
(847) 719-2220 Dr. Mario Affinati, M.D.Long Grove, IL · $202 in drug and device payments (2025) ·
(847) 719-2220 Dr. Marwah AlchalabiLong Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Mazin Fattouhi, M.D.Long Grove, IL · $39 in drug and device payments (2025) ·
(847) 719-2220 Dr. Nancy Awadallah, M.D.Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Natalie Correia, D.O.Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 235-3077 Dr. Nicole Sobkowicz, DOLong Grove, IL · No drug or device payments recorded (2025) ·
(847) 924-8747 Dr. Paru Sharma, MDLong Grove, IL · $122 in drug and device payments (2025) ·
(847) 719-2220 Dr. Radhika Huliyar, M.D.Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Ranjana Soorya, MDLong Grove, IL · $257 in drug and device payments (2025) ·
(847) 719-2220 Dr. Richard Baker, D.O..Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Robert Longo, MDLong Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Roland Kitlas, M.D.Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Rubina Usman, MDLong Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Saba Siddiqui, M.D.Long Grove, IL · $126 in drug and device payments (2025) ·
(847) 719-2220 Dr. Shohala Numaira, M.D.Long Grove, IL · $145 in drug and device payments (2025) ·
(847) 719-2220 Dr. Sindhu Kurup, MDLong Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Sundeep Grewal, D.O.Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. Vishnu Jindal, M.D.Long Grove, IL · No drug or device payments recorded (2025) ·
(847) 719-2220 Dr. William Staehle, M.D.Long Grove, IL · $122 in drug and device payments (2025) ·
(847) 719-2220 Dr. Kinda Muslemani, M.D.Loves Park, IL · No drug or device payments recorded (2025) · Telehealth ·
(815) 639-8500 Dr. Michael Maloney, DOLoves Park, IL · No drug or device payments recorded (2025) ·
(815) 639-8500 Dr. Pedro Deguzman, MDLoves Park, IL · No drug or device payments recorded (2025) ·
(815) 639-8500 Dr. Robert Glovsky, MDLoves Park, IL · $106 in drug and device payments (2025) ·
(815) 971-2000 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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