He directly addresses the inaccuracy of that claim in the following 10 minute video, "The $55,000 Appendectomy: What Everyone Should Know About Hospital Bills". [3]
[1] https://www.reddit.com/r/IAmA/comments/4lgnif/i_am_david_bel...
Even so, my last visit was less than $100, including blood work. There wasn't even an in-network discount or anything. So I doubt I'm subsidizing anyone, and I don't think the hospital is suffering too much from treating everyone.
The problem we have here is the exact same problem as with taxis/Uber (and telcos somewhat. and actually that public code thread we argued about the other day, too). Rather than just directly subsidizing infrastructure for poor people, governments enticed businesses to provide some service at a loss by giving them special privileges across the board. As the market finds more efficient solutions, the reality disconnect becomes painfully apparent. Market consumers grow sick of the incumbents' overhead, while simultaneously the businesses gradually renege on their unprofitable obligations.
I would seriously consider going without insurance except for the highest cost goods & services (say over 100k) except for the fact that it will cost me more to go to the doctor for a check then my insurance company currently pays.
The group discount without the risk sharing would be a very interesting product for me. I wonder how many other people would be interested in such a thing.
I think a fundamental problem of trying to privately implement this idea is that medical businesses have an extreme amount of overhead simply to deal with insurance companies, but they don't precisely ascribe it to insurance as payment. From a doctors' office's perspective, the "actual cost" of providing you cash service still includes paying all their back office rather than just actual services rendered.
Coming from the other direction, you have high-deductible plans that effectively do this in many more words. Plus that whole tax subsidy that fueled the growth of this institutional cancer in the first place.