<P> Cassidy concentrated on stage acting for most of the 1980s and early 1990s . He appeared on Broadway and West End productions such as Mass Appeal and Bus Stop, as well as the American premiere of Pass / Fail at the Mark Taper Forum in Los Angeles . Cassidy won a Dramalogue award for his work in Mark Sheriden's Diary of a Hunger Strike at the L.A.T.C., and his final stage appearance was opposite his half - brother David in the Broadway production of Blood Brothers (which successfully ran for over a year on Broadway). It was during this production that Cassidy wrote his first television pilot, American Gothic, opening the door to a long - term contract with Universal Television . </P> <P> From the late 1990s, Cassidy created, wrote, and produced numerous shows for network and cable including American Gothic, Roar (starring Heath Ledger), Cover Me, Invasion, Ruby & the Rockits and Emerald City . </P> <P> He is currently working as a consulting producer for the new series "New Amsterdam" (starring Ryan Eggold) and has written at least one script for the series . </P> <P> Cassidy grew up in Los Angeles and New York City, attending boarding school in Bucks County, Pennsylvania, and graduating from Beverly Hills High School . In addition to an elder half - brother, David Cassidy, he has two younger brothers, Patrick and Ryan Cassidy . </P>

Is shaun cassidy a producer on new amsterdam