Mohammed, Welcome to our forum but I am sorry you have to be here. I am a ten year survivor or stage 2 bladder cancer and I had my treatment at Massachusetts General Hospital in Boston and University of Chicago Medical Center both world class Institutions. What follows is a short list of some of the best bladder cancer centers in the United States and the world.
MD Anderson in Texas in considered to be if not one of the top in the world.
UC Davis, California
Memorial Sloan-Kittering, New York
Cleveland Clinic, Ohio
Here is a link to our Treatment finder that will give you links and phone numbers for making appointments.
bladdercancersupport.org/bladder-cancer-help/resources/treatment-center-finder
I hope this helps this is not a complete list but it is where I would start my search.
Good luck and we are here is you need anything else.