HealthCare.gov: for information about the Affordable Care Act (Obamacare)
World Health Organization: check out the Health Topics, Data, and Publications tabs
PublicAgenda.org: see the Health Care tab, including the 2013 report "Curbing Health Care Costs: Are Citizens Ready to Wrestle with Tough Choices?"
Key Resources on Antibiotics, Superbugs, and Industrial Farming: from The Pew Charitable Trusts
Medical Device Innovation: from The Pew Charitable Trusts