The fourth season of the American comedy television series Scrubs premiered on NBC on August 31, 2004, and concluded on May 10, 2005, and consists of 25 episodes.

Colin Farrell, Matthew Perry, Molly Shannon, Clay Aiken, and Tara Reid guest starred.

has a new love interest of his own when a new and very attractive psychiatrist, Dr. Molly Clock (Heather Graham), arrives at Sacred Heart.

Tad Quill and Bill Callahan, who Lawrence had worked with on Spin City, came on as co-executive producers.

Meanwhile, Turk has symptoms of diabetes but in his stubbornness refuses to admit it or visit a doctor as Carla wishes.