When does Doogie Howser, M.D. return?

Doogie Howser, M.D. is an American medical sitcom that ran for four seasons on ABC from September 19, 1989, to March 24, 1993, totaling 97 episodes. Created by Steven Bochco and David E. Kelley, the show stars Neil Patrick Harris in the title role as a teenage physician who balances the challenge of practicing medicine with the everyday problems of teenage life.