The Hollywood Reporter says La Salle will play Evan Morrison, a neuropsychiatrist who focuses on human behavior. La Salle's arc on the upcoming series will include at least four episodes.
"Patrick reminded me of [Eriq] and Noah [Wyle] because they were so dedicated to learning how to suture and Patrick has learned how to tie surgical knots," Baer recently told TVGuide.com.
La Salle also directed and guest-starred on an episode of Baer's previous series Law & Order: Special Victims Unit.
A Gifted Man premieres Friday, Sept. 23 at 10/9c on CBS.