The top 10 or 15 do vary depending what list they are off of. But this isn't the key you know they are good hospitals whether it is #4 or #20 and then as Pat said go to the hospital websites and find your Dr's do your homework. Like this I chose the Univ of Penn then I found the Dr's I wanted starting with my Uro/Oncologist, Oncologist, and my Surgeon. Joe
http://www.uphs.upenn.edu/abramson/vaughn.html
http://www.uphs.upenn.edu/surgery/faculty/ajw.html
http://pennhealth.com/Wagform/MainPage.aspx?config=provider&P=PP&ID=1398
This is the trio of Dr's that saved my life and they all have quite a list of protocols and the best part they are all so down to earth and everyone of them would answer any question I had and never once rushed me through an appointment.