Yeah, well, they can't take the medical exam while showing your driver's license to prove he's you.
Anyway. There's no central database.
But you can contact these guys:
http://www.mib.com/html/lost-life-insurance.html pay them $75, and give them proof of who you are, and they'll give you a list of all companies in the past ten years, who've received an application on your life. Then you can call each of those companies (if any) to see if there's an active policy on you.