Patient Centred Medical Home. The PCMH model that WentWest has adopted (Bodenheimer Model) is well documented and researched, and advocates enhanced patient access to comprehensive, coordinated, evidence-based, interdisciplinary care. PCMH is in its early stages of adoption within Australia, however, has made significant inroads in areas such as Boston, USA where the Cambridge Health Alliance (CHA) leads a changing approach to primary care.