"Good" from our perspective is not always the same as "good" from a patient perspective. Some of the best doctors I know have the bedside manner of a chunk of midsummer roadkill. And some of the worst could charm anyone.
The best friend to have is an OR nurse. She knows which doctor is on cocaine, who cannot stop shaking when handling the scalpel, who cannot bother with a prep checklist before a surgery.
If you are doing surgery for a loved one, consult an OR nurse. They will tell you what's up.
Best of all, nurses all talk to each other, so chances are someone in their group will know that Dr. Charming over at hospital X is nicknamed The Undertaker by in-the-know staff...
I've also seen doctors where their social skills honestly impaired them from getting through to people and thus getting the needed outcomes.
Also... Your "roadkill" doc may do well with me. Smooth talkers always seem to come up short for me.