Photo of Dr. John M. Dalena, MD

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As a gastroenterologist inCedar Knolls, NJ, Dr. John Dalena helps people with gastrointestinal issues, such as irregularity or inflammatory bowel disease.

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Dr. John Dalena specializes in conditions and diseases of the esophagus, stomach, small intestine, large intestine, liver, gall bladder, and pancreas. has been featured multiple times in New Jersey Monthly and Castle Connolly "Top Doctors" and "Top Doctors in th 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.

Education & Training  

Medical School


  • Mount Sinai Medical Center
    Residency, Internal Medicine


  • UMDNJ University Hospital
    Fellowship, Digestive Diseases

Languages Spoken  

  • English

Atlantic Gastroenterology at Summit Medical Group  


65 Ridgedale Avenue, Cedar Knolls, New Jersey 07927-1313

Office Hours

  Open Lunch Close
Mon 9:00 am 5:00 pm
Tue 9:00 am 5:00 pm
Wed 9:00 am 5:00 pm
Thu 9:00 am 5:00 pm
Fri 9:00 am 5:00 pm

Office Details

Doctor Specialty Gastroenterology
Practice SpecialtyGastroenterology
Group PracticeSummit Medical Group (NJ)
Languages Spoken English

Insurances Accepted  

  • Aetna
  • BlueCross BlueShield
  • Cigna
  • Coventry Health Care
  • Medicare
  • UnitedHealthcare
  • Other