@jim18 I am "elderly" (90+ years of age) and on Medicare. I was afraid Medicare would not authorize Proton Therapy both due to the cost, and in view of my age resulting in an obviously limited life expectancy. I was reassured by the facility at which I received my care that Medicare approval "would not be a problem." It wasn't. The proposed 42 treatment regimen was approved without any delay, actually less than the delay occasioned with my dentist regarding a root canal.