The survey (a United Nations sponsored report) Ms. Kingsbury refers to is interesting.  A quick perusal of the 2017 results shows that there are countries with single-payer health care systems that are ranked both higher and lower than the US in the survey.  It appears that one of the biggest factors that put Norway in the top position was its per capita GDP.  Having a small population and a valuable export commodity like oil probably contributes to that.  It isn't apparent from the survey that "free healthcare" does.