List of H Mart Stores in Gaithersburg, MD Outlet Note Regular Brands H Mart Maryland Gaithersburg Rating 4.8 based on 86 votes Official Website http://www.hmart.com/ Products Food Grocery Stores NameAddressPhone Name/Address/Phone H Mart outlet - Gaithersburg 9639 Lost Knife Rd (301) 355-7499 People Also Viewed