Biography and education
Potasnik graduated from Yeshiva University in 1972 and continued on to receive a master's degree from Bernard Revel Graduate School of Jewish Studies, a division of YU. He then obtained a law degree from Brooklyn Law School.
Together with Deacon Kevin McCormack, Potasnik co-hosts Religion on the Line on WABC (AM) radio; Potasnik has been with the show since its inception in 1982. He is the religious commentator for WINS (AM) radio.