The Chief Medical Officer (CMO) for Wales is the principal medical advisor to the Welsh Government. The role involves providing expert advice on public health issues, medical policy, and health system performance. The CMO is responsible for overseeing public health initiatives, promoting health improvement, and ensuring the healthcare system addresses the population's needs effectively. They also play a crucial role in health crisis management, developing strategies to tackle health inequalities, and collaborating with various stakeholders to improve health outcomes across Wales. Additionally, the CMO represents Wales in health matters both nationally and internationally.