English: Senior Fellow
Welsh: Cymrawd Hŷn
Subject: Iechyd
English context: Donald M. Berwick, MD, MPP, FRCP, President Emeritus and Senior Fellow, Institute for Healthcare Improvement, is also former Administrator of the Centers for Medicare & Medicaid Services.
Welsh context: Mae Donald M. Berwick, MD, MPP, FRCP, Llywydd Emeritws a Chymrawd Hŷn o'r Sefydliad dros Wella Gofal Iechyd, hefyd yn gyn-Weinyddwr y Canolfannau ar gyfer Gwasanaethau Medicare a Medicaid.