Greenberg wanted to give back to the game that had so enriched her life which she did by establishing clubs that foster the learning and enjoyment of the game. Honors in Manhattan and Hartes in White Plains NY attract some of the largest table counts in the United States. In addition to club activities, she has been teaching bridge for thirty years and has written four books. Most recently, she updated and republished Dorothy Hayden Truscotts classic Winning Declarer Play.
Greenberg is a past-president of the Greater New York Bridge Association and has served on the National Ethical Oversight Committee, the National Appeals Committee, and the Women’s Trials Committee.
One of the leading players, Greenberg has not missed an NABC since 1966. In that time she has won17 North American championship titles and amassed more than 20,000 masterpoints. She has been a member of the winning squad in the Wagar Womens Knockout Teams eight times, claimed the Whitehead trophy for the Womens Pairs three times and won the Rockwell Mixed Pairs, the Freeman Mixed BAM and the Womens Swiss twice. Greenberg has also made her mark on the world stage winning five gold medals, a silver and a bronze in womens teams. She has won the Womens Teams at the World Bridge Games (formerly the Olympiad Womens Teams) three times and the Venice Cup twice. She was also the non-playing captain of the winning womens team at the World Bridge Championships in Shanghai, China, in 2007.
Three of Greenbergs children Brad and Andrew Moss and Jill Levin have distinguished themselves in the game. Levin has a dozen North American titles to her credit along with five world championships. Brad has won 10 major ACBL titles and a world championship. Andrew was a member of the winning Junior team in the 1995 world championships.