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Gastroenterologists in Illinois

Data updated monthly · Last refresh October 2026

886 Gastroenterology providers practice in Illinois, including 264 (30%) 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.

886providers
264telehealth
Chicagotop city

Gastroenterology by city in Illinois

Choose a city to see providers there.

Gastroenterology in Chicago278 providers
Gastroenterology in Maywood39 providers
Gastroenterology in Springfield25 providers
Gastroenterology in Rockford25 providers
Gastroenterology in Aurora23 providers
Gastroenterology in Naperville23 providers
Gastroenterology in Peoria19 providers
Gastroenterology in Evanston18 providers
Gastroenterology in Niles18 providers
Gastroenterology in Glenview17 providers
Gastroenterology in Oak Lawn17 providers
Gastroenterology in Des Plaines15 providers
Gastroenterology in Arlington Heights15 providers
Gastroenterology in Elmhurst15 providers
Gastroenterology in Elgin13 providers
Gastroenterology in Gurnee11 providers
Gastroenterology in Hazel Crest11 providers
Gastroenterology in Libertyville11 providers
Gastroenterology in Lake Barrington10 providers
Gastroenterology in Winfield10 providers
Gastroenterology in Bourbonnais9 providers
Gastroenterology in Decatur9 providers
Gastroenterology in Hoffman Estates9 providers
Gastroenterology in Olympia Fields9 providers

Gastroenterology 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. Matthew Horowitz, M.D.
Homewood, IL · No drug or device payments recorded (2025) · (708) 799-3305
Dr. Robert Kaiser, M.D.
Homewood, IL · No drug or device payments recorded (2025) · (708) 799-3305
Dr. Shiban Ganju, M.D.
Homewood, IL · No drug or device payments recorded (2025) · (708) 799-3305
Dr. Hao Zhang, M.D. PHD
Huntley, IL · $62 in drug and device payments (2025) · (847) 535-6284
Dr. Bachar Hamad, M.D.
Joliet, IL · $112 in drug and device payments (2025) · (630) 717-2600
Dr. Basant Jhawar, M.D.
Joliet, IL · $234 in drug and device payments (2025) · (815) 741-8551
Dr. Faizan Khan, DO
Joliet, IL · $350 in drug and device payments (2025) · Telehealth · (630) 717-2600
Dr. Gerard Cerniak, M.D.
Joliet, IL · No drug or device payments recorded (2025) · (815) 744-7507
Dr. Riten Sheth, M.D.
Joliet, IL · $49 in drug and device payments (2025) · (815) 744-6722
Dr. Suresh Bhalla, MD
Joliet, IL · No drug or device payments recorded (2025) · (815) 744-2054
Dr. Tamer Atassi, M.D.
Joliet, IL · $963 in drug and device payments (2025) · (630) 685-2877
Dr. Jonathan Williams, D.0.
Kenilworth, IL · $124 in drug and device payments (2025) · Telehealth · (847) 256-3400
Dr. Yolandra Johnson, MD
Kenilworth, IL · $642 in drug and device payments (2025) · Telehealth · (847) 251-8661
Dr. Stuart Issleib, MD
La Grange Highlands, IL · No drug or device payments recorded (2025) · (630) 336-7870
Dr. Amit Shah, M.D.
Lake Barrington, IL · $1,624 in drug and device payments (2025) · (847) 382-4410
Dr. Carlos Zamudio, PA-C
Lake Barrington, IL · No drug or device payments recorded (2025) · (847) 382-7165
Dr. Chad Spangler, M.D.
Lake Barrington, IL · $1,822 in drug and device payments (2025) · (847) 382-4410
Dr. Dafna Gordon, M.D.
Lake Barrington, IL · $89 in drug and device payments (2025) · (847) 382-4410
Dr. Dale Coy, M.D.
Lake Barrington, IL · $2,355 in drug and device payments (2025) · (847) 382-4410
Dr. Dona Bartelt, M.D.
Lake Barrington, IL · No drug or device payments recorded (2025) · (847) 382-4410
Dr. Manish Bhuva, M.D.
Lake Barrington, IL · $2,933 in drug and device payments (2025) · (847) 382-4410
Dr. Nicole Gentile, MD
Lake Barrington, IL · $679 in drug and device payments (2025) · (847) 382-4410
Dr. Nistha Rawal, DO
Lake Barrington, IL · $1,419 in drug and device payments (2025) · (847) 382-4410
Dr. Philip Nagel, M.D.
Lake Barrington, IL · $30 in drug and device payments (2025) · (847) 382-4410
Dr. Alex Tosiou, M.D.
Lake Forest, IL · No drug or device payments recorded (2025) · Telehealth · (847) 295-1300
Dr. Hina Omar, MD
Lake Forest, IL · $34 in drug and device payments (2025) · Telehealth · (847) 535-6083
Dr. Jamie Wabich, M.D.
Lake Forest, IL · No drug or device payments recorded (2025) · Telehealth · (847) 535-6083
Dr. Chelsea Hartzell
Lena, IL · $56 in drug and device payments (2025) · (815) 541-4654
Dr. Ahmad Hassan, MD
Libertyville, IL · $378 in drug and device payments (2025) · Telehealth · (847) 573-2845
Dr. Andrew Mazulis, M.D.
Libertyville, IL · $167 in drug and device payments (2025) · Telehealth · (847) 573-2845
Dr. Arkan Alrashid, M.D.
Libertyville, IL · No drug or device payments recorded (2025) · (847) 247-0187
Dr. Igor Naryzhny, D.O.
Libertyville, IL · $232 in drug and device payments (2025) · (847) 634-1766
Dr. John Tasiopoulos, D.O.
Libertyville, IL · $4,335 in drug and device payments (2025) · (847) 247-0187
Dr. Mohammad Bawani, MD
Libertyville, IL · No drug or device payments recorded (2025) · (847) 680-5880
Dr. Philip Adjei, M.D.
Libertyville, IL · $5,163 in drug and device payments (2025) · (847) 247-0187
Dr. Robert Hadesman, M.D.
Libertyville, IL · No drug or device payments recorded (2025) · (847) 680-5858
Dr. Saad Hashmi, MD
Libertyville, IL · No drug or device payments recorded (2025) · (847) 573-2845
Dr. Sean Lee, M.D.
Libertyville, IL · $5,573 in drug and device payments (2025) · (847) 247-0187
Dr. Timothy Laurie, D.O.
Libertyville, IL · $353 in drug and device payments (2025) · Telehealth · (847) 362-1393
Dr. Niraj Ajmere, M.D.
Lisle, IL · $301 in drug and device payments (2025) · Telehealth · (630) 717-2600
Dr. Edmundo Rodriguez-frias, MD
Maryville, IL · $2,505 in drug and device payments (2025) · (618) 391-5070
Dr. Francisco Tagle, MD
Maryville, IL · $1,349 in drug and device payments (2025) · (618) 391-5070
Dr. Mark Fedder, MD
Maryville, IL · No drug or device payments recorded (2025) · (618) 288-0346
Dr. Alexis Ayonote, M.D.
Mattoon, IL · $360 in drug and device payments (2025) · (217) 258-4155
Dr. Jaymon Patel, M.D.
Mattoon, IL · $19,752 in drug and device payments (2025) · (217) 258-4155
Dr. Mustafa Abdul-hussein, MD
Mattoon, IL · $153 in drug and device payments (2025) · (217) 258-4155
Dr. Abdelhai Abdelqader, MD
Maywood, IL · $26,087 in drug and device payments (2025) · (708) 216-9000
Dr. Agata Bednarz, M.D.
Maywood, IL · No drug or device payments recorded (2025) · (708) 216-9000
Dr. Alice Van Pelt, MD
Maywood, IL · No drug or device payments recorded (2025) · (708) 216-9000
Dr. Alisa Farokhian, MD
Maywood, IL · $155 in drug and device payments (2025) · (708) 216-9000

Conditions Gastroenterology providers in Illinois commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Gastroenterology providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Gastroenterology providers are in Illinois?

There are 886 Gastroenterology providers with active NPI records practicing in Illinois, according to federal NPPES data refreshed monthly.

Do Gastroenterology providers in Illinois offer telehealth?

Yes. 264 of the 886 Gastroenterology providers in Illinois (about 30%) report offering telehealth services in CMS data.

Which cities in Illinois have the most Gastroenterology providers?

Chicago (278), Maywood (39), Springfield (25) have the highest concentration of Gastroenterology providers in Illinois.

How many Gastroenterology providers in Illinois received drug or device company payments?

554 of 886 Gastroenterology providers in Illinois (63%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Gastroenterology providers in Illinois treat?

Gastroenterology providers commonly treat acid reflux, IBS, Crohn disease, ulcerative colitis, celiac disease 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 Gastroenterologists in Illinois work in independent practices or large health systems?

Among 598 Gastroenterologists in Illinois enrolled in Medicare, 9% bill through a solo or small practice with fewer than 10 clinicians, 9% through a mid-size group of 10 to 99, and 82% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Gastroenterologists in Illinois work at?

According to CMS facility affiliation records, the Illinois hospitals where the most Gastroenterologists hold privileges are Northwestern Medicine Central Dupage Hospital in Winfield; Northwestern Memorial Hospital in Chicago; Northshore University Healthsystem - Evanston Hospital in Evanston.

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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 Gastroenterology in Illinois? Get featured.