Ken Kercheval

as Dr. Christopher Webber

as Cliff Barnes (40 episodes)

as Self

as Mr. Payton (2 episodes)

as Cliff Barnes

as Harlan Richards

as Mr. Zwicki (1 episode)

as Self (1 episode)

as Barone

as Bernie Green (1 episode)

as Alex Ridlin (1 episode), as William P. Bissell (1 episode), as Duke Fallon (1 episode), as Keith Dunn (1 episode)

as Dr. Slade (1 episode)

as Dr. Martin

as Charlie (1 episode)

as Frank Stevens

as Mr. Simpson

as Frank Mahoney

as Willie

as Arthur Strickland

as L. D. Ryan

as Al Bremmer (1 episode)

as Louis Devlin (1 episode)

as Rutherford Lovejoy (1 episode)