Magen David Adom in Israel | 6,363 followers on LinkedIn. Israel's National EMS and Blood Services Organization | Magen David Adom (MDA) is Israel’s only national EMS and blood services organization. MDA is responsible for teaching first aid and emergency medicine and professional services, blood services, and engages in humanitarian activities for the community. MDA operates 1,200 emergency vehicles and two helicopters from 170 stations. 23,500 of MDA's highly trained personnel are volunteers.