Personally, I did not even ask about "percentage flatness". I wanted the hernia repaired and a functional abdominal wall. I needed to be reasonably close to home for family reasons. The hernia specialist did what he was supposed to do. It's not beautiful, but my organs are again protected and there is no 'hernia baby' protruding.
I think you're getting clouded by extraneous information and 'fluff'. Think about if the physician closer to your home can adequately perform the surgery. She would not attempt to do so in a facility that is unable to accommodate post-operative medical and nursing needs - to knowingly do so would open her to all sorts of malpractice liability.
Just my $0.02. That and a couple of bucks can get you a cup of coffee.