Fortunately, there are many people working on precisely this issue. Here are a few that have been proposed:
Avik Roy, "The Tea Party's Plan for Replacing Obamacare".I don't necessarily endorse every element of all of these plans. But they all contain excellent ideas that would move us in the right direction towards a full free market in health care.
Sally Pipes, "The Pipes Plan: The Top Ten Ways to Dismantle Obamacare". (Introduction viewable at Scribd.)
Docs4PatientCare, "The Physician's Prescription for Health Care Reform"
An in a free market, we'd see all sorts of innovations and improvements, such as affordable "concierge" medicine: "Concierge Doctors: They're Not Just for the Super-Rich Anymore".