Kreizman was a part of the writing team for the long running CBS Daytime soap opera Guiding Light since the late 1990s. In 2004, he was promoted to the position of Head Writer by newly appointed Executive Producer Ellen Wheeler. He replaced writer Ellen Weston. Much was made of Kreizman's age, 29, at the time of his appointment as Head Writer.
In July 2009, Kreizman accepted the position of Co-Head Writer at another CBS soap opera, As the World Turns. After As the World Turns's cancellation was announced, he became Co-Head Writer of All My Children in March, 2010. He and co-head writer Donna Swajeski would share those duties until they were both replaced a year later.
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. The story engendered further controversy with Jonathan's actions; before anyone realized his true identity, he seduced his cousin Tammy, which initially caused her much anguish after his identity was revealed. The story wandered into further controversy when Tammy and Jonathan became a couple. Kreizman also created Josh and Cassie as a married couple, despite a huge Josh/Reva fan following.
GL reached a record low of 2,009,000 viewers for the week of May 30, 2008. Its previous lows were 2,025,000 viewers (week of July 13, 2007), and 2,080,000 viewers (week of May 1, 2008). Ratings have 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. However, Kreizman and his team won the Daytime Emmy Award for Outstanding Writing in a Drama Series, and the serial tied for Outstanding Drama Series in 2007.
Kreizman's parents are Ira and Joan Kreizman. Ira Kreizman is a superior court judge in Freehold, New Jersey, and Joan is a school principal. Kreizman married Natasha Katzive, an Associate Director on Guiding Light, on April 15, 2000.
- Head Writer: March 21, 2013 - June 20, 2013
- Co-Head Writer (with Donna Swajeski): March 15, 2010 - April 1, 2011 (First airdate: May 12, 2010; Last airdate: June 24, 2011)
- Co-Head Writer(with Jean Passanante): July 8, 2009 - March 2010 (First airdate October 6, 2009 and last airdate June 4, 2010)
- Breakdown Writer/Script Writer: October 24, 2011- May 9, 2012
- Co Head Writer: August 22, 2008 - September 18, 2009
- Head Writer: (July 6, 2004 - February 29, 2008; April 14, 2008 - August 21, 2008)
- Associate Head Writer: (2001 - July 5, 2004)
- Script Writer: (1999 - 2000)
- Assistant to the Producer: (1997 - 1998)
- Production Coordinator: (1995 - 1996)
- Production Intern: (1995)
- Writer: 2001
Awards and nominations
- Win (2007, Best Writing, Guiding Light)
- Nominations: (1999, 2003, 2008, Best Writing, Guiding Light, and 2010, 2011, Best Writing, As The World Turns)
- Win (2010 season; As the World Turns - shared with Susan Dansby, Lucky Gold, Janet Iacobuzio, Penelope Koechl, Leah Laiman, David A. Levinson, Leslie Nipkow, Jean Passanante, Gordon Rayfield, and David Smilow)
- Win (2004 season; Guiding Light)
- Nominations: (1998, 2001, 2002 season; Guiding Light)
- "Soap Opera TV Ratings, June 8-12, 2009; Multiple Shows Hit Viewership Lows" TVByTheNumbers.com. Retrieved 16 July 2009.
- "WEDDINGS; Natasha Katzive, David Kreizman" NewYorkTimes.com. Retrieved 16 July 2009.