When does St. Elsewhere return?

The series stars Ed Flanders, Norman Lloyd, and William Daniels as teaching doctors at an aging, rundown Boston hospital. The series was produced by MTM Enterprises, which had success with a similar NBC series, the police drama Hill Street Blues, during that same time. St. Elsewhere was ranked No. 20 on TV Guide's 2002 list of "The 50 Greatest TV Shows of All Time"