"I think [Doc McStuffins] has such a positive message for kids to dream big and use their imagination," the singer tells PEOPLE The doctor is in — now with a new theme song! Glee alum Amber Riley ...

New stories, new characters, notable guest stars set in a magical, new world -- McStuffins Toy Hospital -- mark season four of Disney Junior's award-winning animated series "Doc McStuffins," ...

Dottie 'Doc' McStuffins is a nurturing six-year-old girl who runs a playhouse clinic and takes care of stuffed animals and toys. With the help of her fluffy assistants, Doc is there to save the day.