Here is a helpful resource from the Alliance for Health Reform that was recently updated:

Covering Health Issues: A Sourcebook for Journalists Fall 2013 - The Sourcebook, produced with the support of the Robert Wood Johnson Foundation, has the latest information and data on pressing health care topics.
It also includes the names and contact details for top experts in each subject area, along with a comprehensive glossary of health care policy terms.

Table of contents http://www.allhealth.org/sourcebooktoc.asp?SBID=7

PDF version: http://www.allhealth.org/health-issues-sourcebook/Covering-Health-Issues-2013.pdf