About us Our Board Derek McMillan BSc (Hons), Dip Ed, GAICD Director, NARI Board Derek McMillan is a current Director and former Vice-President of the NARI Board. He is Managing Director of Centennial Living, an operator of retirement villages since 2019. Prior to founding Centennial Living, Derek was Chief Executive Officer, Independent and Assisted Living at Australian Unity from 2005-2017, an organisation supporting residents of retirement villages and residential aged care, and clients of in-home care and disability services. He has held Executive and Board positions in Health and Ageing organisations since 1999 including at Australian Unity, the Property Council of Australia and Leading Aged Services Australia – Victoria. Manage Cookie Preferences