Jim Parsons as Michael Ausiello

Ben Aldridge as Kit Cowan

Sally Field as Marilyn

Bill Irwin as Bob

Nikki M. James as Nina

Jeffery Self as Nick

Josh Pais as Scott

Antoni Porowski as Sebastian

Tara Summers as Mrs. Ausiello

Winslow Bright as Kelly Roswell

Allegra Heart as Franny

Sadie Scott as Kirby

Shunori Ramanathan as Dr. Lucas

Corey Saucier as Dr. Underwood

Jason Gotay as Riley

Nhumi Threadgill as Jo

David Marshall Grant as Tony

Megan Irminger as Nurse Angelique

Eleni Yiovas as Night Nurse

Kate Pittard as Candace Baker

Christine Renee Miller as Ruth

Lori Hammel as Nurse Meg

Erica Cho as Dr. Vogt

Brody Caines as Young Michael

Scott Burik as Taxi Driver

Supriya Ganesh as Make-Up Artist

Paco Lozano as Judge