Healthcare/biotech companies typically have a CMO position (chief medical officer) which carries a lot of weight. I'm surprised that's not the way they went with a surgeon.
In an insurance context a CMO would be someone orchestrating coverage policy rather than serving in an advisory capacity iirc. It's a different role for the title.
Yeah that's fair. To be perfectly honest, everything being equal, I'll defer to Bezos and the like in choosing people for high level management positions.