yes, i live in PRG, so that was pretty easy. I don't speak (sufficient) Czech yet, so I just called and tried English.
Try Dr Petr Halata, who was most helpful and put a lady on my side to accompany me to the relevant places in the hospital. surely I wouldn't have got lost, but who'd say no?!
his phone is: 00420 (for Czech), followed by 973 212 429. this was his direct line in January 2005.
Hope this works, as I am out of the country for a while, I cannot check it myself.
cheers, IP