The Harrison Law Group, P.C. The Harrison Law Group, P.C. is based in Elmhurst, New York. As the Founder & CEO of The Harrison Law Group, P.C., Brett J. Harrison is a dedicated and fierce legal advocate. Phone: 800-465-8795 91-31 Queens Boulevard, Suite 500 Elmhurst, New York 11373 United States Map Other Categories: Finance & Legal » Law |