Padgan,
We deal as patients with three types of doctors, but these may be combined skills -
Urologist, who may also be a surgeon or perhaps an oncologist as well, but he practices mainly in urological issues. Once Prostate Cancer metastasizes to bones/ other organs, it is no longer just a urological issue.
Surgeon, who may also be a urologist or oncologist. We try to find surgeons who specialize in Prostate removals, in expectation of better results.
Oncologist. Here things get complicated. Onocolgists also specialize (radiation, different cancers, etc.). You want a medical oncologist who specializes in Prostate Cancer.
My urologist was also my surgeon for my prostate removal, and I had Adjuvant Radiation with a Radiation Oncologist, but as I now have psa levels beginning to rise, I will go to a medical oncologist for discussions of hormone therapies. I will stay with my urologist for questions of ED and incontinence. My relationship with the Radiation Oncologist ended when that treatment was completed.