Who consolidates private loans?

I have consolidated all my student, except the private loan, is there a company that can consolidate private student loans?
Answer
Sallie mae consolidates private loans. if you consolidated your federal ones w/them they can consolidate the private ones too, and you can get one bill and/or one place to bloke age the loans online. if not, they can consolidate the private ones separately. http://www.salliemae.com/consolidate