Thailand has world-class hospitals, serving mainly Westerners fleeing high costs and delays in their own countries. India also has world-class specialists in its major cities. I recently met an Indian doctor from Chennai who was doing only hip-replacements, mostly on Canadians.
The Philippines also has high some quality medical facilities. I know of one in Zamboanga (S.Mindanao) that is on par with the best we can offer, and the prices are very low.