HealthcareDiscovery.AI / Doctors / California / Rancho Cucamonga / Gastroenterology

Gastroenterology in Rancho Cucamonga, California

Data updated monthly · Last refresh September 2026

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

Gastroenterology providers in Rancho Cucamonga

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. Andrea Tieng, M.D.
Rancho Cucamonga, CA · $134 in drug and device payments (2025) · (909) 255-7200
Dr. Arwa Zakaria, DO
Rancho Cucamonga, CA · $1,042 in drug and device payments (2025) · (909) 655-0300
Dr. Bhavesh Patel, M.D.
Rancho Cucamonga, CA · $1,730 in drug and device payments (2025) · (909) 655-0300
Dr. Deborah Anghesom-negusse, MD
Rancho Cucamonga, CA · $275 in drug and device payments (2025) · Telehealth · (909) 360-1111
Dr. Hussein Abidali, DO
Rancho Cucamonga, CA · $2,066 in drug and device payments (2025) · (909) 655-0300
Dr. Muhammad Hammami, M.D.
Rancho Cucamonga, CA · $343 in drug and device payments (2025) · Telehealth · (909) 606-4860

Conditions Gastroenterology providers in Rancho Cucamonga, California 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 Rancho Cucamonga, California?

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

What conditions do Gastroenterology providers in Rancho Cucamonga treat?

Gastroenterology providers in Rancho Cucamonga 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 Rancho Cucamonga Gastroenterology across California

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.