The first season of Private Practice premiered on September 26, 2007 and concluded on December 5, 2007. It consisted of 9 episodes.

The second season of Private Practice premiered on October 1, 2008 and concluded on April 30, 2009. It consisted of 22 episodes.

The third season of Private Practice premiered on October 1, 2009. and concluded on May 13, 2010. The season consisted of 23 episodes.

The fourth season of Private Practice premiered on September 23, 2010, and concluded on May 19, 2011. The season consisted of 22 episodes.