Thomas Sowell's "Single Payer Plan": HIMSELF!
What did we do, back during the years when most Americans had no medical insurance? I did what most people did. I depended on a "single payer"-- myself. When I didn't have the money, I paid off my medical bills in installments. The birth of my first child was not covered by medical insurance. I paid off the bill, month by month, until the time finally came when I could tell my wife that the baby was now ours, free and clear.
In a country where everything imaginable is bought and paid for on credit, why is it suddenly a national crisis if some people cannot pay cash up front for medical treatment? That is not the best way to do things for all people and all medical treatments, which is why most Americans today choose to have medical insurance. But millions of other people choose not to-- often young and healthy people, sometimes deadbeats who use emergency rooms and don't pay at all.
Is this ideal? No. But if every deviation from the ideal is a reason to be panicked and stampeded into putting dangerous arbitrary powers into the hands of government, then go directly to totalitarianism, do not pass "Go", do not collect $200.