I worked offshore India for a few years, traveling to and from monthly, flying to different airports, Mumbai, Hyderabad, Chennai etc.
It's not a pleasant experience, the airports, streets are congested, waiting in queues for flights etc. the passengers won't give you space, standing, almost touching you, breathing on you, it's not where you want to be after an operation, saying that, even before operation.
I liked working in India, I liked working with the Indians, reliable and hard working but if I was having an operation I would be spending the extra money to have the operation here in Thailand, too many unknowns and 'what if's' for the inexperienced.
If you decide to go to India, I'd be flying business class and staying at a quality hotel which will add to the price.