From memory (and mine can be faulty) Trump has said
He wants to get rid of Obamacare and replace it with something that allows people to cross state lines.
He said he was a liberal on Health care and said his position was un-Republican.
He said he wanted everyone to be covered and the government would pay for it.
I think he also said he would make a better health care because he was a better negotiator.
It seems his answers appeal to everyone. I wish he would actually list a policy statement to lay out EXACTLY what he wants or believes in. To me it is pretty easy to see where he is vulnerable on this issue.
Context, context, context.