Thompson Greenspon is a certified public accounting firm providing financial reporting, tax and advisory services for individ ... uals and businesses in a variety of areas, including construction, government contracting, nonprofits, financial institutions, professional services and employee benefits. Located in Fairfax, VA, the firm has been serving the Washington, DC metropolitan area for sixty years. For more information about Thompson Greenspon, visit www.tgccpa.com. read more