You can look up the doctors. I would think you can read about him on that Mayo Clinic's website. If you are uncomfortable, your body is your body.
If you have not met the doctor meet them before the surgery. Ask for a consult if they have not scheduled one. You get to choose. I will say I was diagnosed at my local hospital and my PA suggested i have my surgery at the local hospital or call the COH. I called the COH and the DR i found on my insurance website was Dr. Polverini. She put me at ease. Explained everything and drew out the mastectomy vs lumpectomy and wrote about margins and all that info i did not know. I still have that paper in my file. It made it real.
I would put that question up above in the search bar. My cancer was DCIS and another with Brca2 tossed in. I had a skin saving mastectomy, with implants about my same smaller size. Minus everything but the skin removed, I know I trusted my surgeon and the plastic surgeon she works with often. I was treated at City of Hope in California.