Might I also suggest close to home, Northwestern University?
https://www.cancer.northwestern.edu/types-of-cancer/prostate/Other than being in CA, I have heard that Prostate Oncology Specialists charges patients and does not rely on most insurances, not sure how that works with VA (like TriCare?) but you can check out the link below:
https://www.prostateoncology.com/services/medical-billing/The key is finding the doctors and place you can trust your care with. There are lots of sub classifications within Stage IV even through it sounds so harsh and final, like the word "metastatic. My wife is Stage IV and will most probably live a long time given the specifics of her situation. The radiation plan may solve the problem, you never know...