Dr. Kildare is an NBC medical drama television series which originally ran from September 28, 1961, until August 30, 1966, for a total of 191 episodes over five seasons. Produced by MGM Television, it was based on fictional doctor characters originally created by author Max Brand in the 1930s and previously used by MGM in a popular film series and radio drama. The TV series quickly achieved success and made a star of Richard Chamberlain, who played the title role. Dr. Kildare (along with an ABC medical drama, Ben Casey, which premiered at the same time) inspired or influenced many later TV shows dealing with the medical field. Dr. Kildare aired on NBC affiliate stations on Thursday nights at 8:30–9:30 p.m. until September 1965, when the timeslot was changed to Monday and Tuesday nights at 8:30–9:00 p.m. through the end of the show's run.