Having had direct experience with Japan, South Korea and Thailand, it's also really difficult to overstate just how much more cost effective mundane medical treatments can be. Things that would bankrupt you in certain countries are minor inconveniences in others. I don't have experience with later life healthcare as of yet but for the normal stuff prior to that, I will say that the medical systems of Asia appear to be vastly superior to their first world Western counterparts.

Definitely for those with particular medical requirements, these should be factored into your logistics planning for your destination. Information is typically abundant.

It really drives home just how fundamentally broken certain healthcare structures actually are.