Calling Dr. Kildare is a 1939 film in the Dr. Kildare series. Directed by Harold S. Bucquet, it stars Lew Ayres as the young Dr. Kildare and Lionel Barrymore as Dr. Gillespie, his mentor. The second of MGM's series of Kildare films, it introduces Laraine Day as nurse Mary Lamont, the love of Kildare's life.