
The East and West coaches with the best winning per centage in their conference as of February 3 earn the right to coach the star-studded contest.
Because of the Celtics' dominance, Rivers and his staff were able to clinch the honour after beating the New York Knicks, 109-93 on Sunday.
"This is a fantastic honour for our team, our players, and our coaching staff," Rivers said.
"We look forward to proudly representing the Eastern Conference at this year's All-Star Game. We will have fun, but we will be real competitive with the wonderful gathering of All-Stars from our conference."
Celtics' star Kevin Garnett - the leading vote-getter - is expected to be named as a starter when the league officially makes the announcement on Thursday. Teammates Paul Pierce and Ray Allen also have a good shot of being added to the squad.