Stern's the obvious, but....
If it were Stern, I think Drudge would have said "shock jock."
It's probably Weiner/Savage
I doubt Stern because he has so many groupies that he doesn't need to pay a pro for sex. Men who go to prostitutes are usually (a) married or in a committed relationship, and/or (b) butt ugly and can't get laid any other way.