dr. sexton we don't know where we'd be. we were so grateful to find him. dr. sexton is a pediatric god. >> reporter: to make his young patients feel at ease, he wears superhero t-shirts. >> do you have one of those t-shirts on every single day? >> every day. and i teach kids that they're something special and they're super. we're all handicapped. mine, the world can see, but we're all struggling with something, and my disability gives me credibility. >>> action! >>> coming up next -- the very good actor. who's become the good doctor. >> one that comes with a bright responsibility to portray him as an authentically as possible. we're taking you behind the scenes. >> i think shaun could co-exist in the real world. >>> we'll be right back. ♪ hello again. hi. ♪ ♪ get up to $400 towards a galaxy note8 or s8 with qualifying trade-in. only on samsung.com your body was made for better things than rheumatiod arthritis. before you and your rheumatologist move to another treatment, ask if xeljanz xr is right for you. xeljanz xr is a once-daily pill for adults with moderat