He has been credited with roles in 19 television and movie performances, including guest-starring roles in several noted series of the era, including Galactica 1980, Little House on the Prairie, Mr. Belvedere, Newhart, Highway to Heaven, Trapper John, M.D., St. Elsewhere, and Archie Bunker's Place, along with several made-for-TV movies and a feature film called Uncommon Valor.
In 2012 it was reported that Supiran put his acting on hiatus and was a full-time volunteer at a California homeless shelter. His financial situation was affected by a living arrangement when he was 18 years old. There were also questions concerning a former adviser over mismanagement and the loss of more than half a million dollars. Supiran worked for a food and beverage corporation in Henderson, Nevada until 2010 when he resumed his career.