Kreizman was a member of the writing team for the CBS Daytime soap opera Guiding Light since the late 1990s.
In July 2009, Kreizman accepted the position of Co-Head Writer at another CBS soap opera, As the World Turns.
Under Kreizman's watch, several new stories were introduced, most notably the introduction of Reva Lewis's illegitimate son Jonathan Randall, who proved to be much darker and volatile than many previous GL characters.
Ratings continued to slide for most soap operas into 2009, including Guiding Light, which set a new record low viewership of 1,810,000 for the week of June 8, 2009.
It is difficult to determine the effect of Kreizman's writing on the final ratings because the show adopted a radical new production model[2] in 2008 that divided opinion among viewers.
He and several other writers launched Gen Z Media, and are part of the creative team of Six Minutes, a new scripted audio podcast aimed at young listeners.