Anecdotally, most of the people in my circle of friends and family are perfectly satisfied with what we get locally. If you have adequate insurance and no major medical issues, you don't save much by flying down to Mexico. I do have some extended family that have gone to Mexico for treatment, however, mostly of the dental variety. But it was major reconstruction, so it was worth the effort.
I do remember reading a story a couple years back where an insurance company paid for their customer to fly to Mexico, flew down a US orthopedic surgeon, and paid him pretty well for his services. The cost of the flights, surgeon, and medical facility in Mexico were significantly less than it would cost them in the US, so everybody won except the US hospital. As I recall, the hospital in Mexico was collocated with a resort, so it was a nice place to recuperate as well.
Not sure how common that really is, though, stories like that make the news for a reason.
I do remember reading a story a couple years back where an insurance company paid for their customer to fly to Mexico, flew down a US orthopedic surgeon, and paid him pretty well for his services. The cost of the flights, surgeon, and medical facility in Mexico were significantly less than it would cost them in the US, so everybody won except the US hospital. As I recall, the hospital in Mexico was collocated with a resort, so it was a nice place to recuperate as well.
Not sure how common that really is, though, stories like that make the news for a reason.
Edit: Pretty sure this is the story I was thinking about: https://www.advisory.com/daily-briefing/2019/08/13/cancun