Delta Dental is the largest dental plan system in the United States, also known as Dental Service of Massachusetts. The Delta Dental Plans Association is composed of 39 independent Delta Dental member companies operating in all 50 states, the District of Columbia and Puerto Rico. These member companies provide coverage to 68 million people, enrolled in over 120,000 groups. While many of the Delta Dental member companies and Delta Dental Plans Association are non-profit organizations, a few of the member companies have for-profit segments.
,Delta Dental member companies serve more than one third of the estimated 166 million Americans with dental insurance. Delta Dental of Massachusetts and DentaQuest are subordinate companies of Dental Service of Massachusetts.