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 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. Daniel Oreilly, M.D.Palos Heights, IL · No drug or device payments recorded (2025) ·
(708) 361-4778 Dr. James Draguesku, M.D.Palos Heights, IL · No drug or device payments recorded (2025) ·
(708) 361-4778 Dr. Rick Chadha, M.D.Palos Heights, IL · $1,424 in drug and device payments (2025) ·
(708) 361-4778 Dr. Ronald Mochizuki, M.D.Palos Heights, IL · No drug or device payments recorded (2025) ·
(708) 923-5055 Dr. William Kosmala, M.D.Palos Heights, IL · $747 in drug and device payments (2025) · Telehealth ·
(708) 361-4778 Dr. Patrick Murphy, MDPark Ridge, IL · No drug or device payments recorded (2025) ·
(847) 696-3176 Dr. Phithao Nguyen, DO FAAFPPark Ridge, IL · $337 in drug and device payments (2025) ·
(847) 696-3176 Dr. Sarosh Bukhari, D.O.Park Ridge, IL · $5,085 in drug and device payments (2025) ·
(847) 723-2210 Dr. Daniel Martin, M.D.Peoria, IL · $42 in drug and device payments (2025) · Telehealth ·
(309) 308-5900 Dr. Deep Mehta, MDPeoria, IL · No drug or device payments recorded (2025) ·
(309) 655-2000 Dr. Donald Penn, M.D.Peoria, IL · $1,000 in drug and device payments (2025) ·
(309) 672-4980 Dr. Eliathamby Kuganeswaran, M.D.Peoria, IL · $1,871 in drug and device payments (2025) ·
(309) 672-4980 Dr. Fritz-henry Volmar, MDPeoria, IL · $350 in drug and device payments (2025) · Telehealth ·
(309) 524-9400 Dr. Gloria Diaz, MDPeoria, IL · No drug or device payments recorded (2025) ·
(309) 624-9400 Dr. Maureen Lillich, M.D.Peoria, IL · No drug or device payments recorded (2025) ·
(309) 672-4980 Dr. Michael Cashman, M.D.Peoria, IL · No drug or device payments recorded (2025) ·
(309) 624-9400 Dr. Michael ShekletonPeoria, IL · No drug or device payments recorded (2025) ·
(309) 624-9400 Dr. Michael Treanor, M.D. Dr. Sonu Dhillon, MDPeoria, IL · $290 in drug and device payments (2025) · Telehealth ·
(309) 308-5900 Dr. Terry Baldwin, M.D.Peoria, IL · No drug or device payments recorded (2025) ·
(309) 672-4980 Dr. Yuliya Belopolsky, MDPeoria, IL · $1,037 in drug and device payments (2025) ·
(205) 527-2476 Dr. Zohair Ahmed, M.D.Peoria, IL · $307 in drug and device payments (2025) · Telehealth ·
(309) 655-2730 Dr. Edward Doran, MDPrinceton, IL · No drug or device payments recorded (2025) ·
(815) 875-8666 Dr. Geetha Dodda, MDPrinceton, IL · No drug or device payments recorded (2025) · Telehealth ·
(815) 875-8666 Dr. Donald Hermens, M.D.Quincy, IL · No drug or device payments recorded (2025) ·
(217) 222-6550 Dr. John Barbagiovanni, DO Dr. John Bozdech, MDQuincy, IL · No drug or device payments recorded (2025) ·
(217) 222-6550 Dr. Kartikeya Tripathi, M.D. Dr. Charmaine Edwards, M.D.Red Bud, IL · $1,451 in drug and device payments (2025) ·
(618) 282-3831 Dr. Amit Srivastava, M.D.Riverside, IL · $2,117 in drug and device payments (2025) ·
(708) 783-7000 Dr. Joseph Bresnahan, M.D.Riverside, IL · $2,118 in drug and device payments (2025) ·
(708) 783-7000 Dr. Aaron Shiels, M.D.Rockford, IL · $122 in drug and device payments (2025) ·
(815) 397-7340 Dr. Altaf Dawood, M.D.Rockford, IL · $530 in drug and device payments (2025) ·
(815) 971-5510 Dr. Arnold Rosen, M.D.Rockford, IL · No drug or device payments recorded (2025) ·
(815) 397-7340 Dr. Chandrashekhar Thukral, M.D.Rockford, IL · $218 in drug and device payments (2025) ·
(815) 397-7340 Dr. Clinton Snedegar, M.D.Rockford, IL · No drug or device payments recorded (2025) ·
(815) 397-7340 Dr. George Tannous, M.D.Rockford, IL · $277 in drug and device payments (2025) ·
(815) 397-7340 Dr. Hasan Bader, M.D.Rockford, IL · $261 in drug and device payments (2025) ·
(815) 381-7340 Dr. Ilche Nonevski, MDRockford, IL · $117 in drug and device payments (2025) ·
(815) 397-7340 Dr. James Frakes, M.D., M.S.Rockford, IL · No drug or device payments recorded (2025) ·
(815) 397-7340 Dr. John Deguide, M.D.Rockford, IL · No drug or device payments recorded (2025) ·
(815) 397-7340 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.
- Acid reflux
- IBS
- Crohn disease
- Ulcerative colitis
- Celiac disease
- Colon cancer screening
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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