Purge and Dowse aka St. Mungo's

St. Mungo’s Hospital for Magical Maladies and Injuries is reached via Purge and Dowse, Ltd. in Muggle London. Purge and Dowse, Ltd. is an red-brick, old-fashioned department store that has “Closed for Refurbishment” signs hanging on its doors. One speaks to the ugly dummy in the front window, who will nod its assent and beckon you to enter. In a process very similar to how one gets onto Platform 9 and 3/4, one walks into the window. The Healers at St. Mungo's are trained and equipped to treat a wide variety of magic-related illnesses and injuries.