John Dalena, MD

John Dalena, MD
Atlantic Gastroenterology at SMG 140 Park Avenue 3rd Floor Florham Park, NJ 07932

John Dalena, MD

John M. Dalena, MD, specializes in conditions and diseases of the esophagus, stomach, small intestine, large intestine, liver, gall bladder, and pancreas. Dr. Dalena also provides a wide range of gastrointestinal services, including cancer screening, nutritional support, therapeutic endoscopy, and colonoscopy.

In addition to his position at Summit Medical Group, Dr. Dalena is Director of Endoscopy at Morristown Surgical Center and Chairman in the Department of Gastroenterology at Morristown Medical Center in Morristown, New Jersey. He is an attending physician in the Department of Internal Medicine at Morristown Medical Center, Florham Park Endoscopy Center, Hanover Endoscopy Center, and Morristown Surgical Center. Dr. Dalena has practiced privately with Atlantic Gastroenterology in Cedar Knolls, Florham Park, Morristown, and Whippany, New Jersey.

He is a member of the American Medical Association, Medical Society of New Jersey, Morris County Medical Society, American College of Gastroenterology, and Alpha Omega Alpha Honor Medical Society. He is Past Chairman and a member of the Crohns and Colitis Foundation Medical Advisory Committee - New Jersey Chapter.

Dr. Dalena has earned the Morristown Medical Center Physician of the Year Award. He also earned the University of Medicine and Dentistry Fellowship Research First Prize Award and American College of Physicians - New Jersey Chapter Laureate Award for Outstanding Achievement in Medicine. He has been featured multiple times in New Jersey Monthly and Castle Connolly "Top Doctors" and "Top Doctors in the New York Metro Area" listings. Dr. Dalena is one of few physicians nationwide to earn Castle Connolly "Top Doctor" listings for more than 10 consecutive years. His "Top Doctors" listings are reprinted in Inside Jersey and US News and World Report.

When he is not working with his patients, Dr. Dalena is an avid runner and cyclist. He has completed many duathlons, triathlons, and marathons. A life-long resident of Morris County, Dr. Dalena lives in Madison, New Jersey.
Primary Specialty


Gender Male
Education Umdnj-New Jersey Med Sch, Newark Nj 07103
Training Umdnj-Univ Hosp, Gastroenterology; Mt Sinai Med Ctr, Internal Medicine
Services Gastroenterology, Internal Medicine
Consumer Feedback
(285 Reviews)
4 star average for Service
4.5 star average for Environment
3.5 star average for Expertise
4 star average for Staff
5 star average for Recommended
4 star average for Value
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Recent Reviews
Everything went smoothly and was great.
by R. Banks
March 16, 2021
They were great.
by Mary Allocco-Bickar
March 14, 2021
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