No other details were made immediately available.
Spencer spent much of his early career honing his craft in regional theater before achieving a breakthrough as a Vietnam veteran in Emily Mann's 1981 Off-Broadway success Still Life. But he became best known for his turn as maverick lawyer Tommy Mullaney on the long-running NBC legal drama L.A. Law, from 1990 until its 1994 curtain.
Spencer’s returned to TV a year later as vice presidential candidate Leo McGarry on the long-running NBC presedential drama The West Wing. The role earned him an Emmy in 2002 for Best Supporting Actor in a Drama Series, along with a Golden Globe nomination.
Service and funeral arrangements were pending, Hofmann said.