Most docs split the duties and they all have their own routine/preferences.
I'd have to re-read my surgical report to figure out who did what, but I know for a fact that both my neurotologist and my neurosurgeon removed my AN (it's a long, tedious process where they basically peel it apart layer by layer). Most AN surgeries take a long time (mine was 7 1/2 hours) and being "close" work - done through a microscope - it's another reason why the docs alternate duties. A "fresh" pair of eyes is always nice
I also know that my neurotologist stitched me up, because my parents (who were in the waiting room) told me so. There was a board in the waiting room that showed which surgeries were scheduled at what times and with what surgeons. They were getting concerned because they hadn't heard "enough" (in their opinion) about me and my progress and then they saw that the neurosurgeon was in another operating room - while I was still in mine
My neurotologist cleared up that mystery for them, when the sewing was done, and that made them feel much better.
Jan
I forgot to note that in addition to making sure your doc is experienced at AN surgery, if there is a team, you should also ask how often they work together. My neurotologist only works with one neurosurgeon for AN surgeries (and one radiation oncologist for GK) which made a big difference in my mind (no pun intended).