Baker was the radio announcer for Drexel University Dragons men's basketball on WNTP 990 AM from 1997-2012, after which he retired and became the team's public address announcer. Before that, he broadcast Philadelphia BIG 5 Basketball games for 21 years while additionally serving as its executive director from 1981-96. Baker was named to the Big 5 Hall of Fame in 1997 and was inducted into the Philadelphia Sports Hall of Fame in 2012.
Baker reprises his role as the Philadelphia Phillies PA announcer for select Phillies away games at multiple venues that comprise a chain of Philadelphia area sports bars. The events are billed as "Summer Nights with Dan Baker". At these appearances, Baker announces the game over the sports bar's PA system in exactly the same fashion as he would if he was announcing an actual Phillies home game.
On May 7, 2014, the Philadelphia Eagles announced that Baker would no longer serve as the public address announcer for the Eagles, citing that they decided to make a change in the role. Baker will continue to be the public address announcer for the Phillies.