If you need a personal touch, sympathy, in order to deal with your illness or disability, look elsewhere. Ristic is a driven, focussed expert, who tries, but is no nurturer. I'd say, he knows hands in and out, and he does hear a patient and then advise. And he will change his mind to meet your wishes. As a surgeon, my bet is that he's very skilled and not too ready with the scalpel. In a specialist, better smart and expert than supportive and sweet. (Go to your PCP for heart.)