Gregory Pratt

Dr. Gregory "Greg" Pratt is a fictional character on the United States television show ER, portrayed by Mekhi Phifer from April 4, 2002 to September 25, 2008. Mekhi Phifer was removed from the main cast opening credits in the 2nd episode of season 15. Pratt's first appearance as a main character was late in Season 8 in the episode "Orion in the Sky" (2002), as a smart but arrogant intern from VA hospital. He meets Mark Greene on Greene's last day at County and is initially dismissive of him, before becoming more measured when he learns of Mark's terminal cancer, and by day's end he has learned a little about practicing medicine from Dr. Greene. Dr. Pratt wasn't present at Mark Greene's funeral but in flashback episode in Season 12 "Body...