You bring up a relevant point in healthcare. I elected to have a procedure down to treat bph( benign prostatic hypertrophy) researched options, decided on the option and thought about going to Mayo where the procedure was developed but decided I did not want to have the procedure done by a resident or fellow once I was under anesthesia. Researched the company that produces the equipment for the procedure and found one of their centers of excellence 3 hours from my home and had it done without issue. My wife had spine surgery at Mayo by an attending neurosurgeon, we went there as a son was a medical student there at the time, he later was a chief resident under Harry Flynn at Baskin( why the cataracts were done there).
As I have said in several healthcare threads choose your providers carefully even if you have to travel and it always helps to have inside information.
Another reason as a medicare patient to choose a supplemental coverage option that does not have a restrictive provider panel.