https://www.metv.com/stories/milburn-stones-gunsmoke-character-was-like-an-alter-ego-to-him

A grandfather, a family doctor and an actor all inspired the character of Doc Adams.

Milburn Stone got his inspiration for Gunsmoke's Doc Adams from an old man who hit him on the street (https://www.metv.com/stories/milburn-stone-got-doc-adams-from-his-grandfather-and-an-old-man-who-hit-him-on-the-street)

A childhood mishap turned out to be amazing for Stone's acting career.