I have used a public health option for all of my adult life. That is the VA medical care system. From time to time it hasn't worked perfectly, but the health care afforded by the caring doctors and staff has been all in all exceptional. Now this system is really a socialized medicine model targeted to a very specific subset of the population veterans, and more specifically combat wounded veterans, but in general could work as a model where specific hospitals and clinics are linked together, as the VA, and have a nationwide database so if you're not in your home area there are locations you can go to for service who will also have your care records. Additionally, like VA in an emergency situation, you could go to the nearest hospital, and be served as if you were in your network. There is a lot of over-sensationalized problems for which VA has been blamed. I just have never experienced any of them. I think a generalized version of this system would work for everyone.