HealthcareDiscovery.AI / Doctors / New Jersey / Union / Gastroenterology

Gastroenterology in Union, New Jersey

Data updated monthly · Last refresh September 2026

13 Gastroenterology providers practice in Union. Listings are drawn from federal public records and are not endorsements.

Gastroenterology providers in Union

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. Arun Mathew, M.D.
Union, NJ · $497 in drug and device payments (2025) · (908) 851-2770
Dr. Daniel Bodek, DO
Union, NJ · $357 in drug and device payments (2025) · Telehealth · (908) 851-2770
Dr. Dhanasekaran Ramasamy, M.D.
Union, NJ · $621 in drug and device payments (2025) · Telehealth · (908) 688-6565
Dr. Geethan Sivananthan
Union, NJ · $337 in drug and device payments (2025) · Telehealth · (908) 688-6565
Dr. Kunal Grover, MD
Union, NJ · $955 in drug and device payments (2025) · (908) 851-2770
Dr. Michael Viksjo, MD
Union, NJ · $949 in drug and device payments (2025) · (908) 851-2770
Dr. Patrick Tempera, MD
Union, NJ · $419 in drug and device payments (2025) · (908) 851-2771
Dr. Pradeep Mahal, M.D.
Union, NJ · $173 in drug and device payments (2025) · Telehealth · (908) 851-6767
Dr. Prakriti Merchant, M.D.
Union, NJ · $209 in drug and device payments (2025) · (908) 851-2770
Dr. Ramon Fernandez-ledon, M.D.
Union, NJ · No drug or device payments recorded (2025) · (908) 851-2770
Dr. Robert Greenblatt, M.D.
Union, NJ · $87 in drug and device payments (2025) · (908) 964-1144
Dr. Samiappan Muthusamy, M.D.
Union, NJ · $1,658 in drug and device payments (2025) · (908) 688-6565
Dr. Sujala Chirla, MD
Union, NJ · $346 in drug and device payments (2025) · Telehealth · (908) 688-6565

Conditions Gastroenterology providers in Union, New Jersey 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 Union, New Jersey?

There are 13 Gastroenterology providers with active NPI records practicing in Union, according to federal NPPES data refreshed monthly.

What conditions do Gastroenterology providers in Union treat?

Gastroenterology providers in Union 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 Union Gastroenterology across New Jersey

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.