Cafodd y penodiad ei wneud yn unol â'r Cod Llywodraethu ar gyfer Penodiadau Cyhoeddus. Mae'r Athro Phillips hefyd yn aelod annibynnol o fwrdd Addysg a Gwella Iechyd Cymru.
The appointment has been made in accordance with the Governance Code on Public Appointments. Professor Phillips is also an independent member of the Health Education and Improvement Wales board.