We’ve Been Named One of U.S. News & World Report’s Best!
Our center has been named one of the Best Ambulatory Surgery Centers in the nation by U.S. News & World Report.
Woodland Park’s Leading GI Specialists Dedicated to Patient Care
Our Woodland Park gastroenterologists and staff at Gastroenterology Diagnostics of Northern NJ are dedicated to providing quality, affordable care to the community in our quest to lower colon cancer rates and treat an array of digestive diseases, including Crohn’s Disease, irritable bowel syndrome (IBS) and gastroesophageal reflux disease (GERD). Gastroenterology Diagnostics of Northern NJ is skilled in performing a myriad of digestive procedures, including colonoscopy, flexible sigmoidoscopy, upper endoscopy and small bowel enteroscopy.
We believe in compassionate medicine, where patients feel reassured and unrushed. We hold ourselves to the highest of standards as the center is accredited by the Accreditation Association for Ambulatory Health Care (AAAHC).
We are also honored to be part of the American Society for Gastrointestinal Endoscopy (ASGE) Endoscopy Unit Recognition Program (EURP), which honors units that have demonstrated a commitment to delivering quality and safety as reflected in their unit policies, credentialing, staff training and competency assessment as well as their quality improvement activities.
Our patients value the compassionate care they receive from our doctors and say they are likely to recommend our center to family and friends.
For Your Visit
Our gastroenterologists and staff at Gastroenterology Diagnostics of Northern NJ are committed to ensuring your experience with us is relaxed and worry-free, from your first office visit through your post-procedure follow-up. To assist us, we ask you read and comply with all guidelines.
We’re pleased to announce our partnership with StopColonCancerNow.com to help boost colon cancer screenings and prevention for residents in the Woodland Park area.
Patient Forms
At Gastroenterology Diagnostics of Northern NJ, your time is as valuable to us as it is to you. Upon scheduling your surgery, a member of our staff will provide you with the required forms to fill out.
Insurance and Billing
Gastroenterology Diagnostics of Northern NJ accepts most major insurance. As a courtesy to you, we will bill your insurance carrier; however, we cannot tell you what your policy will cover.
Artificial Intelligence
Gastroenterology Diagnostics of Northern NJ has integrated state-of-the-art Artificial Intelligence (AI) technology to enhance the precision and effectiveness of our colonoscopy procedure. This AI system digitally analyzes real-time video feeds, assisting our gastroenterologists in identifying polyps.
1,054 Reviews
May 5, 2026
May 4, 2026
Everyone there is awesome! Thank you so much. Special thanks to Toni and Mercy. They helped me a lot
May 4, 2026
Amazing staff so kind and helpful! Place is so clean and everyone takes very good care of you.
May 3, 2026
My experience was. Very good
Apr 29, 2026
I loved my experience. From the moment I got in, the staff were attentive, timely, kind and comforting. It was very clean, sanitary and warm. I was a bit nervous since this was my first time having a procedure, all the staff were so kind. The nurses, anesthesiologist, my Dr, all reassured me and took such great care. I highly recommend them and pray they always remain in business and keep their awesome bed side manner, wonderful and comforting attitude/demeanor.
Recent Posts
Patient Finds Answers Through Timely GI Evaluation at ASC
Discover how one patient found answers for chronic digestive issues at an ambulatory surgery center (ASC).
Dr. Joseph Shami Quoted in Best Life Article on Digestive Health
We’re proud to share that Dr. Joseph Shami of Gastroenterology Diagnostics of Northern New Jersey was recently featured in a Best Life article.
Today my husband had a colonoscopy at this facility. Everything went very smoothly! Everyone was professional, friendly and competent from the moment he walked in until the moment he left! The preparation and discharge instructions were detailed and clear. The waiting area is quiet and comfortable. It was well organized and everyone knew what they needed to do and did it. There is a restroom key readily available in the waiting area. Parking is free and easy. Outstanding handicap accessibility. This is a 5 star experience!