Dennis J. Leonard President & Chief Executive Officer of Delta Dental of Massachusetts Dennis J. Leonard has been President of Delta Dental of Massachusetts since 2011 and Chief Executive Officer since 2019. Delta Dental is the largest dental insurer in Massachusetts, serving over 2.4 million members. Before leading this organization, he served in other senior leadership roles, such as chief sales officer, regional president, and vice president of sales and marketing. Dennis has over 35 years of experience in the health care industry, including 16 years with Blue Cross Blue Shield of Massachusetts. He has a long-term commitment to public service, serving five terms on the Everett City Council, including as president in 1985. He currently sits on the Boards of Directors for Merrimack College, Everett Cooperative Bank, and Family Service of Greater Boston, where he was Board President from 2009 to 2013. He also sits on the Board of The New England Council, a non-partisan alliance of business, academic and health institutions working to promote economic growth in the New England region, and is Treasurer for the Executive Board of Associated Industries of Massachusetts (AIM), a leading business and public policy association. Dennis was also part of the Transition Team for current Massachusetts Governor Charlie Baker. Dennis graduated from Merrimack College with a Bachelor of Arts in political science and earned his MBA from Northeastern University.