Benjamin S. Carson, Sr., M.D., a pediatric neurosurgeon, poses for a portrait at Johns Hopkins Hospital on January 24, 2012 in Baltimore, Md. (Photo by Ricky Carioti/The Washington Post)

Ben Carson, an emerging star in the conservative movement since his National Prayer Breakfast speech last month, fed into increasing speculation Saturday that he could run for president.

Carson announced at the Conservative Political Action Conference that he would retire from his medical practice in the coming months and then suggested something else was on the horizon.

"I want to quit while I'm at the top of my game, and there are so many more things that could be done," the 61-year old said as the crowd rose to its feet.