This is a very good question and it is difficult to get a broad overview about what is going on. Medical journals do not really give you a good idea, so you have to go looking...
Magazines that may be helpful include:
Medical economics: memag.com
Internal medicine news: internalmedicinenews.com
However, it might be best to surf the web:
Google: news.google.com (scroll down to health care section)
CNN: cnn.com/health
CDC: cdc.gov
Hope this helps!