Dr. KG Balakrishnan November 2010 onwards
Mr. CV Biju October 2009- November 2010 (i/c)	Dr. KG Balakrishnan August 2008- September 2009		Mr. CV Biju April 2007- August 2008 (i/c)	Dr. MP Chandrasekharan December 2004- April 2007	Mr. CV Biju October 2004- December 2004 (i/c)	Dr. S Suresh Babu June 2001- October 2004	Dr. KV Valsarajan Oct 2000- May 2001