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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 in Chicago2,841 providers
Internal Medicine in Maywood252 providers
Internal Medicine in Springfield196 providers
Internal Medicine in Evanston180 providers
Internal Medicine in Peoria171 providers
Internal Medicine in Oak Lawn169 providers
Internal Medicine in Park Ridge160 providers
Internal Medicine in Urbana142 providers
Internal Medicine in Rockford81 providers
Internal Medicine in Naperville73 providers
Internal Medicine in Mchenry72 providers
Internal Medicine in Berwyn68 providers
Internal Medicine in Skokie64 providers
Internal Medicine in Elgin61 providers
Internal Medicine in Oak Park59 providers
Internal Medicine in Glenview58 providers
Internal Medicine in Arlington Heights53 providers
Internal Medicine in Elmhurst48 providers
Internal Medicine in Decatur44 providers
Internal Medicine in Aurora44 providers
Internal Medicine in Long Grove42 providers
Internal Medicine in North Chicago41 providers
Internal Medicine in Joliet40 providers
Internal Medicine in Lombard38 providers

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. Kevin Petermann, M.D.
Oak Lawn, IL · $241 in drug and device payments (2025) · (800) 991-6117
Dr. Krishna Shah
Oak Lawn, IL · $288 in drug and device payments (2025) · (708) 398-0287
Dr. Lauren Casbon
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 684-8000
Dr. Lee Tai, M.D.
Oak Lawn, IL · $16 in drug and device payments (2025) · Telehealth · (708) 684-4393
Dr. Leilanie Mon, M.D.
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 499-3160
Dr. Lisa Dunning, M.D.
Oak Lawn, IL · $505 in drug and device payments (2025) · Telehealth · (708) 423-2880
Dr. Lucy Ho, MD
Oak Lawn, IL · $200 in drug and device payments (2025) · (312) 609-0300
Dr. Maen Talib, DO
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 398-0287
Dr. Maheen Rahman, MD
Oak Lawn, IL · No drug or device payments recorded (2025) · (312) 609-0300
Dr. Malgorzata Gajda, MD
Oak Lawn, IL · $1,352 in drug and device payments (2025) · Telehealth · (708) 425-5500
Dr. Malgorzata Plummer, M.D.
Oak Lawn, IL · $4 in drug and device payments (2025) · (708) 684-8000
Dr. Malik Ata, MD
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 398-0287
Dr. Mandy Enshiwat, M.D.
Oak Lawn, IL · $200 in drug and device payments (2025) · (708) 684-8000
Dr. Manuel Paredes Flores, MD
Oak Lawn, IL · $507 in drug and device payments (2025) · (708) 398-0287
Dr. Margaret Barcinski, MD
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 398-0287
Dr. Mariani Salazar Leon, MD
Oak Lawn, IL · No drug or device payments recorded (2025) · (773) 677-8380
Dr. Maria Vivian Sanchez, M.D.
Oak Lawn, IL · $559 in drug and device payments (2025) · (630) 691-4434
Dr. Mario Arevalo, M.D.
Oak Lawn, IL · No drug or device payments recorded (2025) · (312) 609-0300
Dr. Mariusz Gadula, MD
Oak Lawn, IL · $299 in drug and device payments (2025) · Telehealth · (708) 425-0070
Dr. Mark Reiter, M.D.
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 499-2323
Dr. Mary Sullivan, M.D.
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 499-4190
Dr. Matthew Barnett
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 398-0287
Dr. Matthew Posen, DO
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 684-4393
Dr. Megan Elmes
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 398-0287
Dr. Megan Leitner
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 398-0287
Dr. Megan Wasz
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 684-8000
Dr. Melanie Gordon, MD
Oak Lawn, IL · $135 in drug and device payments (2025) · (773) 318-7705
Dr. Michael Kim
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 398-0287
Dr. Michael Yu, MD
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 398-0287
Dr. Mihika Iyer, DO
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 684-8000
Dr. Ming-yeng Tang, M.D.
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 424-2082
Dr. Mira Hassan
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 684-5673
Dr. Mitul Patel, DO
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 398-0287
Dr. Mohsin Safvi, DO
Oak Lawn, IL · No drug or device payments recorded (2025) · (028) 770-8398
Dr. Natalia Zero, DO
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 684-5673
Dr. Nathan Fletcher
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 398-0287
Dr. Nerissa Fernandes, DO
Oak Lawn, IL · $90 in drug and device payments (2025) · Telehealth · (708) 398-0287
Dr. Nicholas Patel
Oak Lawn, IL · No drug or device payments recorded (2025) · (312) 609-0300
Dr. Nicole Kim, DO
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 684-8000
Dr. Nikil Chari, DO
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 398-0287
Dr. Noel Kadamandla, MD
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 398-0287
Dr. Noor Alkhawam
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 398-0287
Dr. Olaoluwa Adeyemi, M.D
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 398-0287
Dr. Omair Arshad, DO
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 398-0287
Dr. Parimal Sura, M.D.
Oak Lawn, IL · No drug or device payments recorded (2025) · Telehealth · (708) 398-0287
Dr. Philip Papaioannou
Oak Lawn, IL · No drug or device payments recorded (2025) · (708) 684-8000
Dr. Pratyusha Yadavalli, M.D.
Oak Lawn, IL · $227 in drug and device payments (2025) · (708) 684-4000
Dr. Regine Marie Lim
Oak Lawn, IL · $22 in drug and device payments (2025) · (708) 398-0287
Dr. Roa Zaied
Oak Lawn, IL · No drug or device payments recorded (2025) · (312) 609-0300
Dr. Robert Chalupczak, M.D.
Oak Lawn, IL · $832 in drug and device payments (2025) · Telehealth · (708) 425-5500

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.

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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Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Internal Medicine in Illinois? Get featured.