MDA national is a doctor-owned medical defence organisation supporting over 46,000 australian doctors since 1925. for 100 years, we’ve provided expert medico-legal protection and career-long support. owned by doctors, for doctors, we exist to safeguard our members’ reputations and promote good medical practice across australia. your local mda national contact is briony van den brink bvandenbrink@mdanational.com.au