Cwm Taf Health Board took over from Cwm Taf NHS Trust (Welsh: Ymddiriedolaeth GIG Cwm Taf) in 2009. The Trust was formed on 1 April 2008, following the merger of the North Glamorgan and Pontypridd & Rhondda NHS Trusts. Cwm Taf NHS Trust provides healthcare services mainly for the population of Merthyr Tydfil County Borough and Rhondda Cynon Taf. The Cwm Taf NHS Trust's headquarters are in Ynysmeurig House, Navigation Park, Abercynon.