Michael Phelps as Dr. McSwimmy on Grey’s Anatomy

There’s a new doctor at Seattle Grace! Shirtless swimming champ Michael Phelps will play a cameo role as Dr. McSwimmy in the season primiere of Grey's Anatomy.

Series regular Eric Dane, aka Dr. Mark Sloane, also made an appearance in the Grey’s scenes with Phelps. Watch the video below!

The 2-hour premiere of the Grey’s Anatomy airs this Thursday, Sept. 25 @ 9PM on ABC.

Source: Jared