A resident of Westchester, in suburban Chicago, D’Ambrosio is the longtime president of the Italian American Executives of Transportation. He serves on the executive board of the Joint Civic Committee of Italian Americans and on the board of directors for the Columbian Club of Chicago.

He is a member of the Fr. August Feccia Charitable Foundation, Chicagoland Italian American Charitable Organization, Italian American Police Association, Italian American Labor Council and Sons and Daughters of Italy in America. He also serves an ethics commissioner in Westchester and volunteers at Casa Italia in suburban Stone Park.