Creativity is essential to successful new product development efforts. Teams constitute the organizing principle in most modern innovation activities. Although creativity research has revealed many factors influencing individual creativity, little is known about how team-level creativity is determined. Since the creative innovation task requires teams to combine and integrate input from multiple team members, the team's communication pattern is an important determinant of team creativity. Based on a sample of 44 NPD teams in eleven companies, this study examines the effects of team-member communication on team creativity. It is found that both interaction frequency and subgroup-formation of communication have a negative relationship to team creativity. Theoretical and practical implications are discussed, and further research is indicated.