After an MFA from Rutgers University in 1963, he began his career in New York City as an artist; but by 1966 gave that up to become an art dealer.
[1] He worked for twelve years as an assistant to the art dealer André Emmerich.
[4]He showed work by the artists Louise Bourgeois, Lee Krasner, Joan Mitchell and Alice Neel, and by photographers such as Jan Groover, Robert Mapplethorpe, Diane Arbus, and Bruce Weber.
[5] He retired in 2002, and died on June 22, 2011, aged 72, at his home in El Portal, Florida, from an infection.
[4] Patti Smith reflecting on her friend Robert Mapplethorpe thought Miller was a mentor to him.