EXCLUSIVE: #ThePitt star #SupriyaGanesh, who plays Dr. Samira Mohan, will exit the series for Season 3. According to an individual with knowledge of the situation, the decision is story-driven. As a teaching hospital, Pittsburgh Trauma Medical Center regularly sees residents come and go. #AyeshaHarris, who plays senior night shift resident Dr. Parker Ellis, has been promoted to series regular for Season 3.