Costa Rica was an example I pulled out of my ass. Any country where palm trees grow will be fine.

But since you asked, I googled it, they have both public and private options, public option is only available to citizens of Costa Rica.

My assumption was that it was private, not sure why anyone would assume the goal was chasing free healthcare. My point was that if I have to pay for it anyway, I'm gonna pay someone else. Someone that also lives in the tropics.