Dr. Jason Fillmore (played by Forrest Tucker) is a protagonist in Doc.
Dr. Orville Truebody (played by Rick Lenz) appears in Doc.
Will (played by J. Pat O'Malley) appears in Doc.
Luke (played by John Qualen) appears in Doc.
Mrs. Dobson (played by Norma Varden) appears in Doc.
Sheriff Bart (played by Guy Raymond) appears in Doc.
Watkins (played by Roland Winters) appears in Doc.
Conductor (played by Parley Baer) appears in Doc.
