Google recently released its public data explorer which combines the Google visualization tools with public datasets include population data and health data. For healthcare, the initial launch includes Sexually Transmitted Diseases in the U.S. and Cancer cases in the U.S. The charts allow selection by state and time options. For these two charts, CDC data sources are used.
Something like this approach is needed in the UK, where there is a very rich, but dispersed, layer of population health data.