After playing young Josh in Big, he got a role to play in Newsies in the year 1992. He is a friend to Luke Edwards and Max Casella who played in latter film. He was engaged to another actress Kerry Washington since 2004 until 2007. He was in the Magazine Time Out New York and he reported the involvement of Moscow in developing economic and sustainable housing of Harlem. He has a young brother called Lev and he played as an extra in the Newsie and he is history teacher of Beacon School of New York City. Moscow makes the directorial debut in psychological thriller called Desolation. He launched the Kickstarter in order to help the fun post production for the video reenactment of the Zoltar wish scene in the Big. The Kickstarter was able to raise over 70,000 dollars.

David Moscow got married to Karen Riotoc and the wedding was in Claremont Hotel in the city of Maine. A Ceremony came out to be a huge surprise to the fans, friends and family. None knew that he was about to get married even the colleagues agree that they did not know that he was in relationship with his wife, before marriage. After his break up with Kerry, he did not date any other woman and many people were concerned about it. So when he announced about his wedding, everyone was surprised and everyone wanted to congratulate him.

His wife, Karen is not well known and she works in Radium One, which is advertising company that works online. The company is known to build the automated software about the media buying. The couple had not made too much appearance to the public.

Besides being actor, David Moscow is also a producer who produced the movies like The Hell Benders and Odessa. He is now engaged into Tic Tac Top Movie. He is not available on twitter but he has over 600 followers on the Instagram account. His net worth is not disclosed online and he has no children yet with his wife. He spends most of his free time with his wife but he does not like to appear on the red carpet with her often.