irs md phone number
Maryland IRS Offices. Click for Directions on Google Maps: 190 Admiral Cochrane Dr., Annapolis, MD - (301) 695-7615. 31 Hopkins Plaza, Baltimore, MD - (410) 962-7969. 201 Thomas- Johnson Dr., Frederick, MD - (301) 695-7615. 1260 Maryland Ave., Hagerstown, MD - (301) 797-6624. 8401 Corporate Dr., Landover, MD - (202) 927-9361.