Michael R. Tendler, M.D.Untitled-2

Of Advanced Gastroenterology Associates is a Board Certified Gastroenterologist who has been in practice in Monmouth County for over 21 years.

A native of New Jersey, after attending and graduating with honors from Muhlenberg College in Pennsylvania, he returned to New Jersey to pursue his medical education at the University of Medicine and Dentistry of New Jersey – Robert Wood Johnson Medical School (New Brunswick), where he received his doctorate of medicine. He then completed his internship in Internal Medicine at New York University (NYU) and his medical residency at The New York Hospital/Cornell Medical Center. From there he went on to complete his Gastroenterology fellowship at University Hospital of Medicine and Dentistry of New Jersey/Newark.

Dr. Tendler treats all aspects of gastroenterology ( digestive diseases) and hepatology ( liver diseases), such as but not limited to, colon cancer screening, heartburn/GERD, irritable bowel syndrome (IBS), Crohn’s disease and colitis, and Celiac disease, as well as expert experience in colonoscopy and upper endoscopy. Additionally, Dr. Tendler is one of the most experienced physicians in Monmouth County at wireless capsule endoscopy. Dr. Tendler prides himself on delivering excellent quality medical care and is a strong advocate for colon cancer screening as a successful method for early detection of colon cancer

He and his partners perform procedures at two state-of-the-art surgery centers: Endo-Surgi Center of Old Bridge, and CAMIS (Center for Ambulatory and Minimally Invasive Surgery), and  at the well-respected hospital, CentraState Medical Center in Freehold.


  • ERCP
  • Colonoscopy
  • Upper GI Endoscopy
  • Wireless Capsule Endoscopy
  • Sigmoidoscopy
  • Hemorrhoid Banding


Dr. Tendler is consistently awarded Vitals, “Patients’ Choice Award’s”, as one of New Jersey’s favorite physicians.

For numerous years in a row, Dr. Tendler has received the Vitals, “Compassionate Doctor Award”, as one of America’s most compassionate doctors.

Dr. Tendler is included in the “New York Metro Area Top Doctors list”.


Don’t IgnoreThat Stomach Pain

When in doubt n in doubt, check it out. That’s my medical position about bouts of stomach pain. Not every gastrointestinal upset requires a trip to the doctor or ER, but stomach pain or ongoing discomfort can indicate that something is amiss and it’s best to get it checked out, especially if the pain worsens or continues for more than
24 hours.

But let’s be realistic—we all have belly pain occasionally. When you consider everything your stomach and surrounding organs are required to do to keep the body functioning, it’s understandable. This kind of pain can be tricky for doctors to diagnose. A doctor will probably run lab tests and take down your long- and short- term medical history in order to diagnose the root cause of the discomfort.

There are a myriad of potential causes for abdominal pain, including emotional issues, eating certain foods, gastrointestinal upset, flu, constipation, infections,
food poisoning, muscle strain and just ordinary gas pains, which are harmless but can feel particularly alarming and painful.

In one of the most serious and rare scenarios, stomach pain can be an indicator of pancreatic cancer, predicted to be one of the top cancer killers by the year 2030. It typically spreads rapidly and is seldom detected in its early stages, which is why it’s a leading cause of cancer death. The more common findings leading to suspicion for pancreatic cancer are yellowing of the skin and whites of the eyes, upper abdominal pain radiating to the back, loss of appetite, weight loss and unexplained blood clots.


Immediate medical attention is required if abdominal pain is accompanied by one
or more of these serious symptoms: fever; diarrhea or blood in the stool; persistent constipation; change in the color of urine; continued nausea or vomiting; severe tenderness of the belly; jaundice or swelling of the abdomen. These symptoms could suggest a more urgent medical condition that can worsen over time. But the sooner you seek medical care, the faster your condition can be diagnosed and treated.

While severe stomach pain may be frightening, more often than not, the situation is acute (temporary) and can be resolved with medication and/or ongoing medical care provided by a physician specializing in gastroenterology.


Advanced Gastroenterology Associates Offers 3 Convenient Locations:

475 County Road 520
Baron Plaza, Suite 201
Marlboro, NJ 07746

59 Kent Road
Howell, NJ 07731

100 Perrine Road
Old Bridge, NJ 08857

466total visits,7visits today

Opening Hours


9:00- 5:00


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9:00- 5:00


9:00- 5:00


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Our Address:

475 County Road 520 Baron Plaza, Suite 201 Marlboro, NJ 07746

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Susan K (verified) March 20, 2017 4:02 pm
Health Care/Wellness Professional
Would You Recommend

Dr. Tendler just performed my first colonoscopy, and although the prep was not fun, the rest of the process with him, I must say was excellent. He is very caring, explains everything both before and after so well, I recommend him very highly! Top notch doctor!!

466total visits,7visits today

Ellen S. September 15, 2016 12:12 pm
Health Care/Wellness Professional
Would You Recommend

Had my first visit with Dr. Tendler recently and found him to have an excellent bed-side manner and a real listening for my issues. He prescribed medicine to alleviate my problem and it worked and I feel great now. He is a confident and excellent diagnostician and I recommend to all.

466total visits,7visits today