The Mind and Life Institute was the first official organization that looked at the positive effects of meditation, hosted conferences, etc.
www.mindandlife.org
Now there are other kinds of institutes now that look at meditation / mindfulness from a scientific and health point of view.
http://www.brittonlab.com/
http://www.buddhistgeeks.com/2011/09/bg-232-the-dark-night-project/
http://www.brown.edu/Faculty/Contemplative_Studies_Initiative/
http://www.investigatinghealthyminds.org/
http://marc.ucla.edu/
http://www.sbinstitute.com/
http://mbb.harvard.edu/
http://www.emory.edu/religions&humanspirit/Religion%20pages/Contemplative%20Studies.htm
http://www.buddhistgeeks.com/2012/07/bg-262-the-emerging-science-of-mindfulness-meditation/