The biggest issue with cost is that a third party ie the insurance industry is involved. Third party reimbursement in any business or with any product or service will enable and perpetuate inflation. Throw in some greedy providers and/or recipients of third party money it reinforces perpetual inflation.
The cheapest way to lower cost fairly quickly is offer catastrophic insurance coverage only which is actually what "insurance" was ment for, a single event and not routine maintenance, allow insurance to be sold across state lines and offer a straight forward simple government option call it single payer or clinic style medicine-what ever you want.
The problem is now the US has grown so used to the private insurance based system that going to something different, not worse is like getting a junky off crack. So what you have to sit in a waiting room for an hour, things like appointments are a luxury, not a necessity in many cases. The urgent care concept/format is growing fast around here. I heard you can go in for about 1/3 of what a private office doctor billing insurance would get. Priorities which will take some work from the patients and providers.