Prof. Pizer received his B.A. in Mathematics (1967) from Yale University, and his Ph.D. in Mathematics (1971), also from Yale. His thesis advisor was T. Tamagawa. He was an Acting Assistant Professor at UCLA (1971-73) and an Assistant Professor at Brandeis (1973-76) before joining the University as an Assistant Professor of Mathematics in 1976. He was promoted to Associate Professor in 1978 and to Professor in 1989. In 2007 he became Professor Emeritus.
Prof. Pizer is also has a pedagogical interest in using the internet for mathematics education. He is a codeveloper, together with Prof. Gage, of the homework delivery system WeBWorK.