Of course you're scared out of your mind. It's only natural.
Fortunately, when I had that diagnosis, I was at the time volunteering at our hospital and could talk to some of the nurses.
I asked them if they had such a diagnosis, which doctor would they themselves choose. They are not allowed to say anything against any one, but most of them chose one doctor, which is who I went to for surgery. Behind the scenes more than one nurse told me who to stay away from!!
And in my nervousness, I forgot to ask one simple thing, if he did reconstructions!! Seems he didn't like it and never did suggest such a thing..he's dead now so it won't hurt to tell this. So now I live with a Bosom Buddy stuffed in my bra every day, then I go on with my life.