You can get residency as a retiree easily.

And healthcare is dirt cheap.

Ajijic has several North American trained dentists. They charge a whopping $20-$40 for a veneer, $150 for a crown, etc.

There are even websites that cater to this type of tourism in Costa Rica, etc.

Short of getting the latest in treatment for the most obscure diseases, you won't notice the difference..and for many of those diseases, the outcome is already known...