Dr. Wallach received his undergraduate degree from Princeton University and graduated with medical honors from the University of Miami School of Medicine. His medical internship and residency were completed at New York University Medical Center. A gastrointestinal fellowship was performed at Memorial Sloan-Kettering Medical Center in New York. He is a previous president of the New Jersey Gastroenterological Society. Dr. Wallach has numerous medical publications to his credit. He has been named to New Jersey Monthly Top Docs along with annual National recognition awards.

Presently, he is an attending clinical professor in the Department of Medicine at Morristown Memorial Hospital. He is also a clinical attending physician at Saint Barnabas Medical Center. Dr. Wallach is the Medical Director of the Hanover Endoscopy Center and he sees patients at the Morristown and our Roxbury satellite offices.