Born in Mexico City, Dr. Constantiner received his Medical Degree from the Faculty of Medicine at The National University of Mexico in 1975. He served as the Director of Nephrology and Dialysis at New York Downtown Hospital and is an Assistant Clinical Professor of Medicine at NYU Medical Center. He was a member of the Board of Overseers of the Center for Jewish History; and received a Doctor Honoris Causa from TAU in 2004.