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!

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
Labcorp
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.

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
Our goal is for you to leave our office with a memorable and enjoyable experience.
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New Patients
We focus on providing quality medical care, excellent customer service, and a relaxing environment to maintain a lasting patient relationship.
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Appointments
We will do our best to accommodate your busy schedule. Request an appointment today!
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