We shouldn't have to "guess", though. On an issue this important, we should be able to ask him a question and get a relatively straightforward answer.
As for Medicaid, the vast majority of people make to much to be covered - it's essentially the poverty line. So that's not an answer unless he is going to spend yuuuuge suma of money to dramatically expand Medicaid coverage.
Above the poverty line means that bills would be sent out after the fact.
Some skin in the game would be required with payments...
But healthy middle class people would not be forced to buy a product that they did not need.