Locations Dallas/Fort Worth Headquarters 1505 West Walnut Hill Lane Irving Texas 75038 Phone: 817-540-7777 Fax: 817-540-7787 Houston, Texas 7761 West Little York Road Houston Texas 77040 Phone: 713-864-3801 Fax: 713-864-2039 Austin, Texas 18919 North Heatherwilde Boulevard Pflugerville Texas 78660 Phone: 512-467-7333 Fax: 512-832-4194 San Antonio, Texas 12029 Warfield Street San Antonio Texas 78216 Phone: 210-824-9000 Fax: 210-826-6192