Mekhi Phifer is an American actor and producer, best known for his roles in television and film. He gained fame for his portrayal of Dr. Greg Pratt on the medical drama series ER, which aired from 2002 to 2008. Phifer has also appeared in popular movies such as 8 Mile and Divergent. In addition to acting, Mekhi Phifer has worked as a producer and has made guest appearances on various television shows. He was born on March 29, 1974, in Harlem, New York City, and began his career in the 1990s. Phifer continues to be active in the entertainment industry.