Dennis J. Leonard President, Delta Dental of Massachusetts Dennis J. Leonard has been President of Delta Dental of Massachusetts since 2011. 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. Dennis is committed to public services and has served five terms on the Everett City Council, including as president in 1985. He currently sits on the boards of four institutions including Merrimack College, Everett Cooperative Bank, Family Service of Greater Boston (President of the Board, 2009-2013), Associated Industries of Massachusetts (member, Executive Team). Dennis graduated from Merrimack College with a Bachelor of Arts in political science and earned his MBA from Northeastern University.