I don't know personally of anyone to recommend for your father but I do have a friend whose 3 year old daughter was diagnosed last year with an aggressive Stage IV tumor. She was treated at UVA Children's and now her scans are clear. It was a difficult year for her because her treatments were very aggressive. As a retired critical care nurse who did travel assignments the last year I worked, heard lots of great things about the adult side of UVA. If you are close enough, I would recommend it to you. Best wishes for a full recovery for your dad.