The Life and Legend of Wyatt Earp
Plague Carrier
S4 E13:
Earp meets a man on the stage that treats an injured couple after a collision. Earp and Dr. McCarty who is impressed by the man's work urge him to open a practice in Dodge City but when smallpox breaks out they learn he isn't licensed.
Starring
Phillip Pine, Bill Cassady, Russ Bender