O dan strwythur llywodraethu presennol byrddau Iechyd GIG Cymru, mae ymddiriedolaethau'r GIG ac awdurdodau iechyd arbennig yn atebol i'r Gweinidog Iechyd a Gwasanaethau Cymdeithasol drwy eu cadeiryddion.
Under the current governance structure of NHS Wales health boards, NHS trusts and special health authorities are accountable to the Minister for Health and Social Services through their respective chairs.