In an effort to assist the DocGraph Project with adding state-level physician credentialing data, the Community has started working with the Berkman Center for Internet and Society at Harvard University. The Berkman Center is working to farm out the state-level FOIA issues to Harvard-trained FOIA experts each state. The Berkman Center is the leading expert in Internet related legal issues and has been at the foundation of some of the most innovative cyberspace self regulation efforts. The Creative Commons licenses are among successful Berkman projects.
Data Scientist Ryan Weald created an awesome visualization based on the DocGraph data set. You can find the full resolution image here as well as other data science resources here on his blog. Here is another link where Ryan provides further DocGraph referral analysis.
(Edit May 20, 2016 it looks like these links are down… Ryan has moved his blog to github)
Wired article about DocGraph by Sarah Mitroff on 11/27/2012
Gigaom article by Ki Mae Heussner
AHCJ Article on HealthJournalism.org by Pia Christensen Oct. 22, 2012