05/27/2011 08:20 am ET Updated Jul 27, 2011

Zach Braff In 'Oz: The Great And Powerful': 'Scrubs' Star Signs On To Disney Film

Zach Braff became famous working some medical magic on "Scrubs." Now, he's set to make his national comeback practicing a shadier sort of wizardry.

After a Deadline report indicated late Thursday night that he had entered into discussions with Disney, Entertainment Weekly reports Friday that Braff has officially signed on to co-star in "Oz: The Great and Powerful." Braff joins an already star-packed cast for what is to be a prequel of the beloved film, "The Wizard of Oz."

Braff will play Frank, a loyal yet underappreciated assistant to James Franco's trickster salesman, who, on a trip gone awry, lands in the mystical land of Oz to fanfare and adulation.

Franco's character becomes the Wizard of Oz, and sets off with Michelle Williams' Glinda the Good Witch in an epic journey also starring Mila Kunis as Theodora, the eventual Wicked Witch of the West, and Rachel Weisz, who plays Wicked Witch of the East, Evanora.

Child star Joey King is also part of the cast, having just signed on to play China Girl.

Braff most recently appeared on screen in the indie drama "The High Cost of Living," and is scheduled to shoot another drama, "The Devil and the Deep Blue Sea," this one with Jessica Biel and Chloe Moretz. His last major studio film was 2006's "The Ex," in which he co-starred with Jason Bateman and Amanda Peet, among others.

"Oz: The Great and Powerful," to be directed by Sam Raimi, is scheduled to hit theaters March 8th, 2013.

For more, click over to Deadline and Entertainment Weekly.