Dr. Geller received his medical degree from Columbia University in NY. He completed his Internal Medicine training at the North Shore University Hospital, Memorial Sloan-Kettering Cancer Center program of the Cornell Hospitals. He completed his Gastroenterology Fellowship at UMDNJ-Robert Wood Johnson University Hospital, New Brunswick, NJ. As a Wilson-Cook Scholarship recipient, Dr. Geller studied advanced endoscopic procedures at Georgetown University Medical Center in Washington, D.C. He also served as the therapeutic endoscopist at the liver transplant center at Albert Einstein Medical Center in Philadelphia. He has held teaching appointments at the University of Florida, Temple University in Philadelphia and Georgetown Medical School. Dr. Geller has authored chapters in medical textbooks on Gastroenterology and has authored several articles for medical journals. Dr. Geller is Board Certified in both Internal Medicine and Gastroenterology and is a Fellow of the American College of Physicians and the American College of Gastroenterology. In 2016, Dr. Geller has been recognized as an "N.J. Top Doc" for his commitment to excellence in Gastroenterology.