Physician Profile Dr. John Klein Dr. John Klein Locations Potomac Urology Woodbridge, VA 2296 Opitz BlvdSte 350Woodbridge, VA 22191United States View Location Profile Potomac Urology Forest Heights, MD 251 National Harbor BlvdSuite 400-AForest Heights, MD 20745United States View Location Profile Sentara Northern Virginia Medical Center Woodbridge, VA 2300 Opitz BoulevardWoodbridge, VA 22191United States View Location Profile Potomac Urology Alexandria, VA 1800 N. Beauregard StreetSuite 300Alexandria, VA 22311United States View Location Profile