Oliver Platt is an Canadian-born American actor. His Hollywood career began in the 1980s. His early roles in the movies include Married to the Mob and Working Girl. In the ’90s, he gained recognition for his supporting roles in the films Flatliners, Postcards from the Edge, Indecent Proposal, and A Time to Kill, among others. He also became known for his role as Dr. Mark Weller in Dr. Dolittle. In the 2000s, he had roles in the films Kinsey, The Ice Harvest, Casanova, and Frost/Nixon. On TV, he first became known as White House Counsel Oliver Babish on The West Wing. His performance as Russell Tupper on Huff earned him a Primetime Emmy nomination. Since 2015, he stars as Dr. Daniel Charles on Chicago Med.