HealthcareDiscovery.AI / Doctors / Indiana / Merrillville / Gastroenterology

Gastroenterology in Merrillville, Indiana

Data updated monthly · Last refresh September 2026

6 Gastroenterology providers practice in Merrillville. Listings are drawn from federal public records and are not endorsements.

Gastroenterology providers in Merrillville

Listed alphabetically. 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. Ahmad Shughoury, MD
Merrillville, IN · $1,760 in drug and device payments (2025) · (219) 738-2081
Dr. John Mirro, MD
Merrillville, IN · No drug or device payments recorded (2025) · (219) 758-5008
Dr. Kumar Venkatachalam, MD
Merrillville, IN · $2,193 in drug and device payments (2025) · (219) 738-2081
Dr. Mark Fesenmyer, MD
Merrillville, IN · $1,054 in drug and device payments (2025) · (219) 738-2081
Dr. Muhammad Alsayid, M.D.
Merrillville, IN · $1,085 in drug and device payments (2025) · (219) 644-3990
Dr. Rahul Julka, M.D.
Merrillville, IN · $363 in drug and device payments (2025) · (219) 981-9000

Conditions Gastroenterology providers in Merrillville, Indiana 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 Merrillville, Indiana?

There are 6 Gastroenterology providers with active NPI records practicing in Merrillville, according to federal NPPES data refreshed monthly.

What conditions do Gastroenterology providers in Merrillville treat?

Gastroenterology providers in Merrillville 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 records 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.

All specialties in Merrillville Gastroenterology across Indiana

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
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.