Bloomberg analysis gives one point of view.
OECD has published data where you can compares 5-year survival rates after major cancers, heart attack 30-day survival after hospitalization, stroke, ischemic stroke etc. They also keep track of infant mortality, maternal mortality etc. http://stats.oecd.org/index.aspx?DataSetCode=HEALTH_STAT#
Data shows that Japan, South Korea, Israel and Nordics are have the best healthcare quality using these measures. US is often in top 10, or at least mid-tier. Beast cancer is treated very well in US.
But what is wrong with the US and infant mortality and perinatal mortality? How can the US be so low?