Without knowing your medical issues, private medical care is often far CHEAPER, and more professional, overseas.
I had a complete 2-day physical and body scan with MRI, extensive bloodwork, stress-tests, ultasounds, review and consultation with multiple doctors trained at excellent universities around the world etc... done in Thailand for under $1000
In USA that would cost many multiples higher, and my crappy state-health-marketplace Obamacare coverage wouldn't cover any of it, even though my family pays them nearly $20K per year to our communist, political, state-sponsored "health care provider."
The biggest medical problem I have now is that I've been saddled with Long Covid for two years now and that is the biggest impediment to me moving anywhere, let alone overseas. I simply don't have the strength to do much except the basic essentials of every day life.
It would be nice, though, to be able to undergo the type of physical exam you had in Thailand to possibly get an honest appraisal of my overall physical condition.