Rhoes Bwrdd Iechyd Prifysgol Betsi Cadwaladr "fodel prif ganolfan a lloerennau" ar waith  ar gyfer darparu gwasanaethau fasgwlaidd yn y Gogledd ym mis Ebrill 2019, a  argymhellwyd ac a gymeradwywyd gan arbenigwyr allanol. Roedd y model hwn yn cynnwys darparu gofal arbenigol iawn i rai cleifion mewn ymddiriedolaethau yn Lloegr.  Comisiynwyd Adolygiad Gwasanaeth Gwahoddedig gan Goleg Brenhinol y Llawfeddygon (RCS) yn 2020 i adolygu ansawdd y gwasanaeth wedi'i rwydweithio newydd. Daeth yr adroddiad cyntaf o'r adolygiad hwn i law'r Bwrdd Iechyd ym mis Mawrth 2021 a daeth yr ail adroddiad i law ym mis Chwefror 2022.
Betsi Cadwaladr University Health Board implemented a hub and spoke model for delivery of vascular services in north Wales in April 2019; recommended and endorsed by external experts. This model included the provision of very specialised care for some patients in English trusts. A Service Review by the Royal College of Surgeons (RCS) was commissioned in 2020 to review the quality of the new networked service, the first report from this review being received by the Health Board in March 2021 and the second report being received in February 2022.