Single payer system is price fixing. It gives no reward for a better doctor or surgeon. Let's assume that the best and brightest college students who choose to go into medicine have $250,000 in debt for 4 years of college and four years of medical school. Then add another 4-5 years in Residency training earning only $45,000 a year. Where is the incentive to take on such a huge debt if the light at the end of the tunnel is a "government job" on a fixed salary which won't be able to service their debt? Your best and brightest will no longer go into medicine. 

If you propose a single payer system, then you had better figure out how to provide free college and medical education to these folks. 

I've been to the Post Office. I've seen "single payer" in action. Wait till the government controls all medical costs. How do you like dealing with problems at the IRS, DMV or the Anchorage Parking Authority. Further, half the Anchorage physicians would quit or leave such a system. Good luck!