A graduate of Brooklyn College, Malzberg worked at 77 WABC for over twenty-five years in several capacities, i.e., as a popular overnight political talk show host, a sports commentator, and co-host of a regular afternoon show with Richard Bey. In 2004, Malzberg joined the staff of New York City radio station WWRL-1600 AM, where he co-hosted an early morning show with New York Daily News columnist Karen Hunter.
In July 2005, the short-lived morning team of Hunter and Malzberg was disbanded as Malzberg left WWRL. In 2006, Malzberg returned to WABC to broadcast brief sports commentary segments. Throughout his career, Malzberg has also served as a substitute talk show host (on radio and television) and political pundit on various cable news shows, such as Heartland (hosted by Republican ex-congressman John Kasich), Fox & Friends, Hannity & Colmes, The O'Reilly Factor, Dayside, and several other programs on the Fox News Channel and CNN. Malzberg has hosted and commentated on cable-news channel MSNBC, where he has substituted for both Monica Crowley and Joe Scarborough. He was a frequent contributor to the now-defunct MSNBC show hosted by television personality Phil Donahue.
On May 7, 2007, Malzberg replaced Lionel as an evening host on WOR in New York and on the nationally-syndicated WOR Radio Network. The Steve Malzberg Show initially aired in the late night (9 PM) time slot, but now airs live on the network from 3 to 6 PM ET Monday through Friday, and on Saturday from 5 to 8 pm ET, after WOR's afternoon drive hosts (Ellis Henican and Lynne White) were dismissed. On WOR, the first two hours of his daily show air live and the weekend show airs on tape delay during the Saturday to early Sunday overnight time slot. He will also be trying out for the late night position on WMAL in March 2008.
Malzberg is a regular columnist for the online magazine Newsmax.
Malzberg is a resident of Fair Lawn, New Jersey.
In the mid to late 1980s he did the Yankees post game show & was a huge supporter of closer Dave Righetti who at the time was notorious for making fans nervous in the ninth inning.