He played college basketball at American University between 1998 and 2002, where he was a three-time all-conference selection and the 2002 Patriot League Player of the Year.
Doctor grew up in Brandywine, Maryland and attended Gwynn Park High School, where as a senior in 1997–98 he was named to The Washington Post's All-Met First Team.
[3] The following season, he averaged 15.4 points, 7.0 rebounds, 1.1 assists, and 1.4 steals per game en route to an All-Colonial Athletic Association First Team selection as a sophomore.
[3][5] Heading into Doctor's senior year of 2001–02, American had switched conferences and left the CAA to join the Patriot League.
[3] After going undrafted in the 2002 NBA draft, Doctor moved to Belgium to play for Basket Bree, but was released by the team prior to the start of the season.