We Welcome New Patients

We invite you to contact us today to discuss your care.
Please don’t hesitate to call us today!

Read More

Request An Appointment Today!

Quickly and easily request your appointment online today.

Request Appointment

Welcome To Riverdale Gastroenterology and Liver Diseases

We are a five-physician practice of gastroenterologists serving the Bronx area for 35 years. Riverdale Gastroenterology & Liver Diseases offers a full array of gastroenterology services such as Hemorrhoids, Colonoscopy, Hepatitis, Colitis, Crohn’s Disease and many more!

Gastroenterologist in Bronx, NY

Hospital Affiliation

Montefiore Medical Center
111 East 210 Street
Bronx, NY 10467
(718) 920-4321

Pathology Services

Montefiore Medical Center-Pathology Services
111 East 210 Street
Bronx, NY 10467
(718) 920-4321

Aurora Diagnostics/Pathology Solutions
246 Industrial Way West
Eatontown, NJ 07724
(732) 389-5200

Laboratory Services

Quest Diagnostics
For Locations, Service Centers and a list of insurances they accept visit their website or call (866) 697-8378

For Location, Service Centers and a list of insurance they accept, visit their website or call (888) 522-2677

We Welcome New Patients

Our Mission Statement

Our practice is working together to realize a shared vision of uncompromising excellence in gastroenterology.

To fulfill this mission, we are committed to:

  • Listening to those we are privileged to serve.
  • Earn the trust and respect of patients, profession and community.
  • Exceed your expectations.
  • Ensure a creative, challenging and compassionate professional environment.
  • Strive for continuous improvement at all levels.

Read More

Gastroenterologist in Bronx, NY

Dr. Isadore Gutwein is very knowledgeable, interested in the whole person and warm. I have been seeing him for decades and I know he is different from most other practitioners.

Ann C.

Nice setting. Friendly staff. Michael S. Ader, M.D. was very thorough in explaining the process. He is a real down to earth person. No complaints.

Seymour K.

Doctor Jeremy Gutwein was very caring and took his time to find out what was going on with me, He make me feel like i was part of his family, i am very happy to know that there is still good human out there.

Nestor A.

Dr Stein was very nice and a straight shooter very thorough.

Luis R.

Not too long ago I went for my first G.I. Doctors appointment with Dr. Stein. As a new patient I was very nervous and didn't know what to expect. Thankfully Dr. Stein was very friendly, making me feel comfortable as soon as I sit down. The fact that he took the time to listen to me very careful and explained everything with reasonable details was amazing. Very knowledgeable, kind and patience. He gave me options and tough me things I didn't know. I would highly recommend Dr. Estein. Thank you so much

Shianny M.

About Us

About Us

Our goal is for you to leave our office with a memorable and enjoyable experience.

Learn More
New Patients

New Patients

We focus on providing quality medical care, excellent customer service, and a relaxing environment to maintain a lasting patient relationship.

Learn More


We will do our best to accommodate your busy schedule. Request an appointment today!

Learn More

Have Questions? We’ll Reply Quickly.

  • Please use this form for general information purposes only. DO NOT send personal health information through this form. Specific patient care must be addressed during your appointment.
  • This field is for validation purposes and should be left unchanged.
Office Hours

Monday – Wednesday: 8:30 AM – 5:00 PM
Thursday: 8:30 AM – 4:30 PM
Friday: 8:30 AM – 3:00 PM
Saturday & Sunday: Closed

Call Us Text Us
Skip to content