Fred (Redd Foxx) initally called Dr. Caldwell to diagnose his whiplash claim in the second season Sanford and Son episode titled Whiplash (Season 2, Episode #2). Dr. Caldwell also appeared in the episodes A Guest in the Yard Season 2, Episode 6) and Lamont, Is That You? (Season 3, Episode 6).
Dr. Caldwell, in a funny and ironic twist, chain smoked and had a horrible cough due to the habit. In the episode Whiplash, Fred shouted to him as he was leaving, "Hey, Doc, you'd better go and see a doctor about that cough!"
Dr. Caldwell was played by late veteran character actor Davis Roberts.