Shammgod played for two seasons at Providence College, where he averaged 10.3 points per game for his college career. He was selected to the Big East All-Rookie Team as a freshman in 1996 after setting the Big East freshman assist record, which has since been broken. As a sophomore, Shammgod teamed with former NBA player Austin Croshere in leading the Friars to the 1997 Elite Eight, where they lost to eventual NCAA Champion Arizona in overtime. Shammgod registered 23 points and five assists while matching up against current NBA player Mike Bibby in the contest against the Wildcats.
Before Providence College, Shammgod was selected to the 1995 McDonald's All-American Team where he joined current NBA player and fellow New Yorker Stephon Marbury on the East Team. Shammgod recorded 9 points in the game. Kobe Bryant learned his crossover dribble from Shammgod while they were AAU teammates.
In the 1997 NBA draft, Shammgod was selected in the 2nd round (17th pick) by the Washington Wizards and played with the team for one season, recording 61 points and 36 assists.
After his NBA carrer, God played in the Chinese Basketball Association for several teams, including the Zhejian Cyclones and Shanxi Yujun. He has played professionally in several countries, including Poland and Saudi Arabia.