Boeheim has also been a coach for USA national teams. In 2001, during his seventh year as a USA basketball coach, Boeheim helped lead the Young Men's Team to a gold medal at the World Championship in Japan. During the fall of that year he was named USA Basketball 2001 National Coach of the Year. He was an assistant coach under Mike Krzyzewski for the US national team in the 1990 FIBA World Championship and 2006 FIBA World Championship, winning the bronze medal both times. He returned as an assistant coach under Mike Krzyzewski for the 2008 Summer Olympics in Beijing, China, and again at the 2012 Summer Olympics in London, England, where the United States won the gold medal both times.
Boeheim had prostate cancer in 2001 and subsequently became a major fund-raiser for Coaches vs. Cancer, a non-profit collaboration between the NABC and the American Cancer Society, through which he has helped raise more than US$4.5 million for ACS's Central New York chapter since 2000. In 2009, Boeheim and his wife, Juli, founded the Jim and Juli Boeheim Foundation to expand their charitable mission to organizations around Central New York concerned with child welfare, as well as cancer treatment and prevention.