Okay.
I have traditional medicare and a supplement. The supplement provides $50,000 international coverage and I have the evacuation plan through DAN. If necessary I hope to repatriate before getting to the $50,000 limit keeping in mind that medical costs in most places are less expensive than the US. Still a bit of a crap shoot I guess though.
When I checked a while back I saw that some medicare advantage plans did have some international coverage but I assume you have checked that.
I did once get a policy through
GeoBlue | International Travel Health Insurance. The website had a lot of options to help get the coverage I wanted. I don't know if they are necessarily the best choice but it worked for me. Didn't make any claims though and I suppose that would be the true test.
Good luck.