Dr. Bob Kelso

Robert "Bob" Kelso, M.D., is a fictional character played by Ken Jenkins in the American comedy-drama Scrubs.
Bob Kelso is the chief of medicine for Sacred Heart Hospital for the first seven seasons of Scrubs (a position held since 1984), though he resigns in the episode "My Dumb Luck". Kelso appeared in every episode during the first eight seasons except three Season 8 episodes, "My Last Words", "Their Story II" and "My Full Moon".

Ken Jenkins was a regular cast member for the first eight seasons, and appeared in nine episodes of season nine.