I kept Medicare Part B, just in case. I also have a Federal Blue Cross Blue Shield plan that works all over the world. I guess I also pay for that. Maybe around $400 a month. Anyway, that plan has an overseas coordinator that will arrange payment at a preferred provider. I recently had an occasion to try it out for a few appointments and tests at Bumrungrad hospital in Bangkok. It worked great. When it came time to pay, I didn’t have to pay anything. For treatment at non-preferred providers, you still have coverage, but you pay first and submit a clam later, unless other arrangements are made.
I’m thinking about getting some sort of Thai accident insurance, just in case something weird happens and I have to go to the nearest medical facility.
As for Thai health insurance, I looked into that and for me, the cost was over $500. Not cheap.
I guess there’s also the option of hopping on a plane back to the US if anything major ever comes up. So far, I’ve been lucky. They never find anything wrong with me.