Kushner (The Juilliard School, MM; Northwestern University, BM) is active as soloist and chamber musician (Weill Recital Hall at Carnegie Hall; Kosciuszko Foundation; Chopin Foundation; United Nations; National Gallery of Art; Phillips Collection; Isabella Stewart Gardner Museum; Dame Myra Hess Memorial Concert Series). She toured internationally, recorded, and taught with the late Igor Kipnis as a member of the Kipnis-Kushner Duo, Piano: Four Hands. She participated in summer festivals in the United States (Aspen, Newport, Ravinia, Skaneateles) and, in Europe, festivals in Spain, France, and Poland.