Ralph A. DeMaio, MD


Dr. Ralph A. DeMaio is a gastroenterologist at Gastroenterology Associates of New Jersey and is board certified by the American Board of Internal Medicine.

Dr. DeMaio completed a fellowship in digestive disease and an internal medicine residency at St. Joseph’s Regional Medical Center in Paterson, NJ. In addition, he was Chief Medical Resident during his residency and completed a medical internship at St. Joseph’s.

He received his medical degree from the University of Bologna in Bologna, Italy and his Bachelor of Arts degree from Rutgers University in New Brunswick, NJ.

Dr. DeMaio is currently a member of the American College of Physicians and the American Medical Association.

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Phone: 973.837.0230

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Dr. DeMaio’s Locations

Woodland Park