My suggestions for fixing it.

Eliminate the health insurers. They provide no actual useful service. Immediately releasing billions of dollars to actually reach actual service providers. It could be done by creating a national insurance plan available to all citizens without regard to income or resources and charge $1/year. Make it a functional replacement for Medicare, Medicaid, drug plans et al. Models to this form of doing business can be easily found in the rest of the world (minus the $1) and as close as the other side of our Northern boarder.

Jobs will be lost; but the economy and our citizens will benefit forever.

The only thing insurance companies actually do is to come up with methods of limiting coverage for each and every commercial contract and requiring complex reporting and form submission, only to argue
with the medical treatment and its' necessity. Just eliminating all the paperwork and followup arguments for the providers will save immense resources and should improve cash flow. Providers can wait months to receive payment from insurers.

Medicare is already a possible basis for the single claim (actually more like a report) processing. Making these processes fully electronic can also save a lot of people time and general delays.

Require the surrender of all privately funded health care systems, including the medical portion of retirement plans. Henceforth all the people involved will be covered by the federal plan.

Be sure that doctors and other service providers get a reasonable wage/return on investment. Either keeping insurance payments at proper levels or simply hiring/buying many of the resources. These people are due a wage commensurate with skills and training, and the cost of acquiring them. Medicare is currently screwing with this part of the equation to the point where it is now difficult to find doctors or facilities willing to take Medicare patients. If the 21% decrease is implemented, everyone on Medicare will have to travel to Canada or Belize to see a doctor.

Another result of the current system is that hospitals charge really huge amounts for uninsured individuals to make up for the insurers driving their reimbursement numbers below survivable rates for the providers. When you get your accounting sheet from the hospital, if you can figure out what it says, look at what the hospital billed and what they got paid. Someone walking in uninsured will pay the first amount. Most I have seen are twice or more the insurance companies rates.