Dempsey's Restaurant Address: 1 Olney Sandy Spring Rd, Ashton, MD 20861 Phone: (240) 390-0162 Restaurants, Caterers Other Businesses: Crab Shack at 12 Olney Sandy Spring Rd, Ashton, MD 20861 El Andariego Restcorp at 5 Olney Sandy Spring Rd, Ashton, MD 20861