• Bachelor of Engineering (Electronics), Royal Melbourne Institute of Technology
  • Post-Graduate Diploma in Management (Marketing), University of Newcastle
  • Post-Graduate Diploma of Business (Accounting), Monash University
  • Diploma of Financial Planning, Financial Planning Association
  • Certified Practising Accountant, Australian Society of CPAs
  • Fellow of the Australian Institute of Company Directors


Mr Christopher Castles is a Northern Australia Primary Health Limited’s (NAPHL) Non-Executive Director and member of the Finance, Audit and Risk Committee, People and Culture Committee, and is Chair of the Growth and Innovation Committee. Chris has significant commercial experience gained from operating his financial services business as well as directorships on listed and unlisted public companies spanning the finance, funds management and agricultural sectors. His experience includes international operations in South-East Asia, China and North America. He is also a current Board Member of the Townsville Hospital and Health Service.

Mr Castles’ interest in the health sector has stemmed from his experience with the health sector as a regional user and the sustainability of service provision in the region’s primary health care and acute care. He has seen services in many regions decline and now start to return as there is a renewed focus on accessibility to health care.  He believes that primary health care is the first line of defence in ensuring a healthy society and for the prevention of many of the acute instances that present in our hospital system.

Mr Castles joined the board in 2012 and has been part of NAPHL’s transition journey from a block funded organisation to a commercially orientated, effective and efficient primary health care service provider. Mr Castles believes that NAPHL is in a unique position to leverage our organisational experience to lead innovative delivery of healthcare services throughout North Queensland and make a real difference in the lives of the people we look after. 

Professional Summary

Mr Castles started his professional engineering career in the Royal Australian Air Force (RAAF) in 1982 and after 13 years of service moved into the financial services sector as a Company Director and small business owner. Since making that move he has held a number of company directorships and been involved in several mergers and acquisitions and a number of diverse international business operations. He brings a unique level of corporate experience, overlayed with the practical approach of small business.