Mark Mcdermott List of directors and agents named Mark Mcdermott. Found 2 results. MARK MCDERMOTT Registered Address: 3715 CALVEND LANE KENSINGTON MD 20895 Appointed in one company. Go To Profile MARK MCDERMOTT Registered Address: 11116 KORMAN DRIVE POTOMAC MD 20854 Appointed in one company. Go To Profile