This article discusses the current mandatory reporting obligations for health practitioners in Australia under the Health Practitioner Regulation National Law. It provides a summary of the mandatory notification legislation, and contextualises the introduction of this law. The details of the Western Australian exemption, under which a treating doctor is exempt from mandatory reporting of a doctor-patient, and the rationale for its introduction are examined. This is followed by a consideration of the potential impact of the mandatory reporting obligations. The authors argue that the Western Australian exemption has merit and should be considered for adoption throughout Australia.