Igor Grosman, DO, FASG, is board certified in both gastroenterology and obesity medicine, serving patients at Triborough GI in Brooklyn, the Bronx, and Staten Island, New York.
We are Triborough GI, your gastroenterologist in New York
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Medical services that you can trust
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Entrust your health to our doctors
We are committed to your health
Make An AppointmentEntrust your health to our doctors
Medical services that you can trust
Make an Appointment -
Entrust your health to our doctors
We are partner in your health
Make An AppointmentEntrust your health to our doctors
Medical services that you can trust
Make An Appointment -
Entrust your health to our doctors
Be attentive to your health
Make An AppointmentEntrust your health to our doctors
Medical services that you can trust
Make An Appointment
Meet The Doctors
Search for Triborough GI expert by specialty, disease, conditione, expertise, or doctor’s last name.
Our Locations
Triborough GI has locations in Brooklyn, Staten Island and Bronx. Get directions and information.
Patient Info
All you need to know about our services, procedures and what to expect prior to your appointment at Triborough GI.
Welcome to Triborough GI
GASTROENTEROLOGY PROFESSIONALS
“We put patients first while providing the most advanced and highest quality of care available. Using state of the art medical equipment, testing, and procedures to precisely diagnose and treat all gastrointestinal conditions, symptoms, and diseases.”

I’ve had good experiences here at Triborough GI. They are clean, the staff is friendly, and the wait time doesn’t make me want to hang myself haha. I’ve seen Dr. Brun here and he is very patient, thorough and knowledgeable.
Josenny B.

My boyfriend suffered for months with stomach pain, gas and digestive issues. One visit to Dr. Brun and he is feeling much, much better. Staff is all friendly, concerned, and knowledgeable. They made us feel at ease and made our visits comfortable. They were understanding of his feelings and pain. I reccomend them 100%!
Robin B.

Dr. Grosman was so awesome. I didn’t feel rush he answered all my concerns and was very kind in asking me if I had any more questions. There was just a peace within me even just walking into his office he was very calm and welcoming.
Laeticia U.

Everybody was doing a great job and made me feel relaxed and confident.
Dr. Grossman is a very good doctor!
Shahar M.
Meet The Team
Igor Grosman, DO, FASG
Gastroenterologist & Obesity Medicine Specialist
Alexander Brun, MD
Gastroenterologist & Hepatologist
Alexander Brun, MD, is a board-certified specialist in internal medicine and gastroenterology. He serves the communities of Brooklyn, Staten Island, and the Bronx, New York, at Triborough GI.
Prateek Chapalamadugu, MD
Gastroenterologist & Hepatologist
Prateek Chapalamadugu, MD, is a board-certified gastroenterologist at Triborough GI serving the communities of Brooklyn, the Bronx, and Staten Island, New York.
Nancy Chen, MD
Gastroenterologist, Obesity Medicine & Hepatologist
Nancy Chen, MD, is a board-certified gastroenterologist and internist at Triborough GI, a gastroenterology clinic with locations in Brooklyn, the Bronx, and Staten Island, New York.
Ilona Rabinovich
ANCC Board Certified Family Nurse Practitioner
Ilona Rabinovich is a ANCC board certified Family Nurse Practitioner (FNP). She is dedicated and compassionate with a strong commitment to providing comprehensive healthcare to all.
Konstantin Peysin, DO
Gastroenterologist & Hepatologist
A board-certified gastroenterologist, Dr. Konstantin Peysin currently practicing at Triborough GI, located in Brooklyn, Bronx, and Staten Island, NY
Yevgeniy Mikityanskiy, DO
Gastroenterologist & Hepatologist
Yevgeniy (Eugene) Mikityanskiy, DO is board certified in internal medicine and gastroenterology. He serves the communities of Brooklyn, Staten Island, and the Bronx, New York, at Triborough GI.
Dmitriy O. Khodorskiy, M.D.
Gastroenterologist, Obesity Medicine, Advanced Therapeutic Endoscopy & Hepatologist
Dmitriy O. Khodorskiy, M.D is board-certified in Gastroenterology, Obesity Medicine and Internal Medicine. Dr. Khodorskiy is a published author and book writer, he is actively involved in clinical research, published in peer-reviewed journals, and presented at both national and international meetings.
Need help finding a doctor? Call us at (718) 332-0600 or MAKE AN APPOINTMENT
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