That might be one reason, but not the only reason. Thailand, as I mentioned above, has a very high quality, low cost healthcare system. But Thailand isn't socialist, it's a parliamentary monarchy. The cost of living there is much lower across-the-board than in Western countries.
The same would certainly be true in India.
I'd suspect a large part of our U.S. costs are due to litigation and "free health care" to those who shouldn't be getting it.
Err India used to be a socialist democracy till the early 90s-it's well & truly on it's way to becoming a free market one,albeit it at it's own pace.Moreover in India ,most people in India go to private hospitals for major medical treatment,not state facilities.The institute mentioned here(Escorts) is just one of many private institutions.The cost of living & education in India is very low(the main logic behind Outsourcing) when compared to the West so any surgery in India will be far cheaper.A lot Brits,Africans,Rich Arabs & Indians living abroad are now flocking to such institutions for quality healthcare at a fraction of the cost it is overseas.Also more & more private multi-speciality hospitals are opening up (some run by Hindu,Buddhist,Christian Religious groups) ,all of which are offeriing such packages to lure foreign money,which in fact helps the Overall healtcare system in India & both Central & State Governments have steadily relaxed restrictions over the past 25 years to encourage this .