In my opinion, you definitely need to get him to a place where there are physicians who are experts in bladder cancer, and Southern Oregon is NOT the place (I used to live there.)
The closest place is, indeed, Portland. I would second Pat's nomination of OHSU for one. Second, my urologist, Dr. Daniel Janoff...having trained with Sia Daneshmand....is also quite knowledgable in this area. He is with Urologic Consultants in Portland, affiliated with Providence Hospital.
Either of these would be good choices, and are about as close to your home as could be.
Best of luck to you.
Sara Anne