The event is the brainchild of Dmitriy Kruglyak of The Medical Blog Network. The summit looks like it will be a great event based on the speakers lined up for various panel discussions. I plan to try to attend and meet in person some of the health bloggers I've communicated with.
If you blog on health care industry related topics take time and complete a survey being conducted by The Medical Blog Network and Envision Solutions called Taking The Pulse Of The Healthcare Blogosphere. The results will be released and discussed at the Healthcare Blogging Summit and should provide the first organized look at the state of the healthcare blogging community.