Daw’r llwyddiant hwn yn sgil y trefniadau cydweithredu ar gyfer darparu gofal y GIG, sydd wedi bod ar waith rhwng y GIG a darparwyr gwasanaethau annibynnol. Mae gan Gymru hanes hir o sefydlu contractau â darparwyr gwasanaethau annibynnol ar gyfer gwasanaethau arennol,  gan i’r contractau cyntaf gael eu dyfarnu dros 20 mlynedd yn ôl. Nid yw’r trefniadau hyn erioed wedi golygu bod gofyn i staff y GIG drosglwyddo at ddarparwr annibynnol o wasanaethau dialysis arennol.
This success is as a result of the collaborative arrangements between NHS and independent service providers (ISPs) for the provision of NHS care. Wales has a long history of contracting with ISPs for renal services, the first contracts awarded over 20 years ago. These arrangements have never led to a requirement for NHS staff to transfer to an independent provider of renal dialysis services.