I live in Scottsdale, AZ. My brother came here for the proton beam at Mayo Clinic. He had head and neck cancer. Blue Cross denied payment on his treatment. One of the reasons was that it cost more than photon beam therapy. Mayo Clinic in Arizona does not charge a penny more whether you use proton or proton beam therapy for cancer. We did an appeal and fought this. One of the reasons they said they denied it was because of the extra cost when the Doctor Who sent them information about proton specifically said there is no extra charge. We wondered if Blue Cross even read with the doctor had sent them. Blue Cross then approved the charge. This was about six years ago and he has cancer free.