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. Robert Rosenbaum, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(312) 926-3600 Dr. Robert RosmanChicago, IL · No drug or device payments recorded (2025) ·
(866) 600-2273 Dr. Robert Vargas, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 942-5000 Dr. Robert Wilson, D.O.Chicago, IL · No drug or device payments recorded (2025) ·
(708) 221-3483 Dr. Robia Byas, M.D.Chicago, IL · No drug or device payments recorded (2025) · Telehealth ·
(773) 445-3500 Dr. Rochell IssaChicago, IL · No drug or device payments recorded (2025) ·
(800) 223-2273 Dr. Rocio Barriga Guzman, MDChicago, IL · $2,332 in drug and device payments (2025) ·
(312) 766-4949 Dr. Rodolfo Aguilar GuerreroChicago, IL · No drug or device payments recorded (2025) ·
(312) 709-8792 Dr. Rodolfo Pamintuan, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(312) 842-7117 Dr. Rohan Bhattaram, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 996-2933 Dr. Rohan Gajjar, MDChicago, IL · $808 in drug and device payments (2025) ·
(312) 864-7311 Dr. Rohan Gupta, M.D.Chicago, IL · $291 in drug and device payments (2025) ·
(312) 864-6000 Dr. Rohini Mendonca, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 665-3000 Dr. Rolando Barajas, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 926-2000 Dr. Roman DhitalChicago, IL · No drug or device payments recorded (2025) ·
(773) 564-5225 Dr. Roman Niziolek, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(773) 271-9040 Dr. Romeo Ursua, M.D.Chicago, IL · $84,823 in drug and device payments (2025) ·
(773) 378-4664 Dr. Ronald Ackermann, MDChicago, IL · No drug or device payments recorded (2025) · Telehealth ·
(312) 695-8630 Dr. Ronald Hickombottom, M.DChicago, IL · $932 in drug and device payments (2025) ·
(773) 275-2586 Dr. Ronald Workman, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(773) 677-6898 Dr. Ronay Thomas, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 702-6840 Dr. Rong XuChicago, IL · No drug or device payments recorded (2025) ·
(773) 257-6552 Dr. Ronnie Mandal, D.O,MBA,MS,MT(ASCP)Chicago, IL · $1,829 in drug and device payments (2025) ·
(773) 545-9500 Dr. Rose VelascoChicago, IL · No drug or device payments recorded (2025) ·
(402) 981-0243 Dr. Rosita Hernandez, MDChicago, IL · No drug or device payments recorded (2025) ·
(773) 873-7800 Dr. Ruba Ghalayni, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(866) 600-2273 Dr. Ruby Arora, MDChicago, IL · $266 in drug and device payments (2025) ·
(866) 600-2273 Dr. Ruchi Trivedi, DOChicago, IL · No drug or device payments recorded (2025) ·
(312) 942-6700 Dr. Rudyard Smith, M.D.Chicago, IL · $388 in drug and device payments (2025) ·
(773) 978-0757 Dr. Rui Zhao, MDChicago, IL · $145 in drug and device payments (2025) ·
(312) 864-6000 Dr. Rupel Dedhia, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(312) 563-2875 Dr. Rusalina Muntean-mincu, MDChicago, IL · $490 in drug and device payments (2025) · Telehealth ·
(773) 724-6200 Dr. Rushdi Alul, DOChicago, IL · $300 in drug and device payments (2025) ·
(312) 770-3439 Dr. Russell Zwolinski, MDChicago, IL · No drug or device payments recorded (2025) ·
(872) 203-3543 Dr. Rusul AlasadiChicago, IL · No drug or device payments recorded (2025) ·
(312) 766-4949 Dr. Ryan Bolton, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 413-3627 Dr. Ryan Fabrizius, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(872) 588-3000 Dr. Ryan LashgariChicago, IL · No drug or device payments recorded (2025) ·
(312) 503-7975 Dr. Ryan Mcquillen, M.D.Chicago, IL · No drug or device payments recorded (2025) ·
(312) 567-2000 Dr. Ryan RauchChicago, IL · No drug or device payments recorded (2025) ·
(312) 942-5000 Dr. Ryan SacharChicago, IL · $258 in drug and device payments (2025) ·
(773) 702-6840 Dr. Ryan YoungChicago, IL · No drug or device payments recorded (2025) ·
(888) 824-0200 Dr. Sabaa Saad-omer, MDChicago, IL · No drug or device payments recorded (2025) ·
(312) 864-6000 Dr. Sabin Gajurel, MDChicago, IL · $225 in drug and device payments (2025) ·
(773) 542-2000 Dr. Sabrina Heline, DOChicago, 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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