Dominion National is a provider and administrator of dental and vision benefits, primarily serving the Mid-Atlantic region including Virginia, Maryland, Pennsylvania, Delaware, and Washington D.C. It offers PPO dental plans, indemnity programs, discount programs, and vision coverage underwritten by its subsidiaries Dominion Dental Services, Inc. and Avalon Insurance Company. The company maintains a large network of over 5,000 participating dentists, emphasizing access and preventive care.