Why Choose GastroenterologyBronx.com
For our Gastroenterology doctor, every appointment holds equal importance. They invest a lot of time in examining patients and eventually plan treatment according to the patients' exact requirements.
Board-Certified Gastroenterologist
Get treated by eminent doctors
Patient Focused Approach
We offer tailored treatment.
Incredible Track Record
Hundreds of successful cases.
High-tech Diagnostic Tools
We use latest imaging equipment.
Quick Appointments
We offer same-week appointments.
Transparent process
We explain before treating.
All-Inclusive Digestive Care
We treat all digestive issues.
Preventive Care
We have preventive screening packages.
Our GI Services
Colon Cancer Screening
Proactive screening — including colonoscopy — to catch colon cancer early or prevent it entirely.
Read MoreAcid Reflux (GERD) Treatment
Lasting relief from chronic heartburn and acid reflux through diet, medication, and advanced diagnostics.
Read MoreIBS Treatment
Personalized management for irritable bowel syndrome, combining diet, medication, and lifestyle strategies.
Read MoreLiver Disease Management
Diagnosis and long-term management of fatty liver disease, hepatitis, and other liver conditions.
Read MoreHemorrhoid Evaluation
Discreet, thorough evaluation and treatment for internal and external hemorrhoids.
Read MoreAbdominal Pain Evaluation
Careful evaluation to identify the source of acute or chronic abdominal pain and the right path forward.
Read MoreCommon Digestive Conditions
Diagnostic & Therapeutic Procedures
Colonoscopy
The gold-standard screening and diagnostic exam for the colon, using a high-definition camera.
Upper Endoscopy (EGD)
A direct look at the esophagus, stomach, and upper small intestine to diagnose upper GI symptoms.
Capsule Endoscopy
A pill-sized camera that captures images of the small intestine, an area other scopes can't reach.
Our GI Specialist Doctors

Dr. Jonathan Rieber, MD
Gastroenterology
Dr. Jonathan Rieber is a Board-Certified Gastroenterologist with over 30 years of experience.

Arkadiy Murdakhayev
Advanced Gastroenterology
Arkadiy Murdakhayev AGACNP-BC: Hofstra University graduate specializing in Advanced Gastroenterology, Adult Primary Care, and Intensive Care.
Insurance Accepted
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What Our Patients Say
Dr. Marchetti explained every step of my colonoscopy prep so clearly that I wasn't nervous at all.
I finally have my IBS under control thanks to the personalized care plan.
Compassionate, thorough, and genuinely caring team.