I think you are exactly on target. The US spends far more per capita on health care than any other country. Yet life expectancy in the US trails Canada and all of the other countries with national health care. A key statistic is fatalities among infants and the US does very poorly in comparison with other industrialized countries.
We need to do better with our infant mortality stats to see which are due to maternal neglect (crack, opiates, alcohol, etc) and lack of concern with access to the system vs poor access to the sytem, incomplete evaluation and delivery of service, and just plain incompetence. How much our attitudes toward addiction and marginalization of addicts contributes to the figures is unknown. Hard statistical nut to crack and thus hard to know where to aim (better services, better access, education for the public and providers)