CMDFA National Board


Prof John Whitehall, National Chair 

Dr Yvonne Lai, Secretary    

Yvonne is a specialist paediatric dentist. She previously worked in general private practice in Bunbury, and Northam, WA, and as a paediatric dental registrar in Perth, and also while on placement in New Zealand. Yvonne has been a CMDFA member since her student days in UWA, has served on the WA State committee, the state dental small group, and as a mentor at past IMPACT conferences. Yvonne is passionate about seeing fellow colleagues in the healthcare field understand the importance of supporting one another as fellow Christian doctors and dentists in the healthcare field, working together to reflect Christ’s love in our professional and personal lives. Yvonne is married to her husband David, and enjoys swimming, jogging and playing the violin in her spare time. She also enjoys long mountain biking with her husband provided she is on an electric bike to catch-up!

Gene Passé-de Silva, Treasurer 

Married with four children and a granddaughter.  

Gene has had extensive experience in senior and executive management roles across most major facets of the banking and finance industry in Australia and overseas. This has included retail and wholesale banking, financial markets, finance and accounting, the corporate office and information technology. Gene also worked for a federal government agency and is currently a consultant in the finance and corporate sector. His practical experience is complemented by sound academic training and qualifications, including a Master of Business degree from the University of Technology, Sydney. 

Gene is a practising Christian with a family heritage and commitment to the Anglican Church. He has a great love of traditional church music, another family inheritance, and was a chorister from a tender age. He has been a member of the St. Matthews Anglican Church, West Pennant Hills for over 30 years and has served as a Church Warden and continues to take an active role as an Assistant Warden and leader in Sunday worship. 

 Dr Chris Williames, Recent Graduates, Staff Worker

Chris is the current CMDFA National Recent Graduates Worker. He has a keen interest in encouraging recent grads to continue in their faith in Jesus and to continue in fellowship with other Christians. Chris is married to Suzannah, who is also a medical doctor, and together they attend Syndal Baptist Church in Melbourne. Chris works as a General Practitioner in the South Eastern suburbs of Melbourne. He first became involved with CMDFA after attending an Impact conference as a first year medical student. During this event he was challenged about the important intersection of Christian Faith and Medical Practice and has been involved with CMDFA since. 

Dr Jacki Dunning, REGS Student Worker

Jacki is currently working as an intern at Alice Springs Hospital. She is a graduate of Monash University, in Victoria, where she was heavily involved in her student CMDFA Group - Monash Christian Medical Students. As a student, she was involved in CMDFA on a state level as a member of the Victorian Committee and Convener of the Grow Mentoring Program for Christian medical students, and involved on a national level as the National Student Representative in 2014. A particular highlight was representing Australia at the World Congress for the International Christian Medical and Dental Association at Rotterdam, The Netherlands. Jacki is passionate about supporting Christian medical students in their journey through medical school and helping them deal with the particular moral, social and ethical problems that arise during this time. Jacki is married to Joseph, an accountant, and enjoys playing piano, exploring the outdoors, and wishes that she enjoyed exercising.


Board Members - Three year Term      

Dr Patricia Chan

MBBS, A/Dip SMBC, Dip RACOG, FRANZCOG (retired), MMed (Clin Epi), PhD

Pat is Chinese born in Burma, migrated to Australia with her family as a child. By God’s grace she was converted from Buddhism whilst studying Medicine at The University of Sydney. After a medical elective term in Raxaul, India with Interserve, and 3 months at Christian Hospital, Sahiwal, Pakistan; she specialised in Obstetrics and Gynaecology. This was followed by masters in Clinical Epidemiology at Sydney Uni, and PhD at RNSH.

Pat is now retired from RANZCOG and assists part time in surgery. She hopes to keep her neurons synapsing by learning to play the piano (in the near future), and involvement in research. Above all, Pat hopes to be a witness, live a life worthy of her high calling, and seek to glorify God in all things. She currently attends a reformed Presbyterian Church.  

Dr Timothy Chung

Timothy is currently a surgical trainee in Melbourne, Victoria. He went to medical school at Monash University where he was active with the Monash Christian Medical Student Society. He also sits on the CMDFA Victorian State committee where he previously served as the state's event coordinator. Tim has a passion for seeing CMDFA grow in its scope and size and is particularly interested in teaching medical students and event planning. Tim looks forward to serving on the national board.

Dr. Nathan Combs

Nathan is a GP Registrar Obstetrician in Geraldton Western Australia where he lives with his wife and two kids. Nathan has been involved with CMDFA as a student and is passionate about mentoring and mentoring relationships.

Dr. Sneha Kirubakaran

Sneha currently juggles several part-time roles as a PhD student (in Medical Education at Flinders University), a Lecturer at Flinders University (teaching Faculty Development and Clinical Skills) and a rural GP (once a month in a rural SA town and ad hoc as a rural locum). She also travels overseas as a volunteer doctor or medical educator once or twice each year, particularly to China. Sneha has been a CMDFA member since 2000 as a first-year medical student and has been involved in leadership roles in leading 11 overseas medical mission trips (Intermed SA); leading the teaching team and running both the Saline Process course and their Train the Trainers course in SA and in leadership roles for Medical Education Consultancies and the Australia; New Zealand Association of Health Professional Education (ANZAHPE). As a new board member, Sneha would hope to provide valuable assistance to the current running of CMDFA but also to explore new avenues of activity, e.g. to explore how Health Professional Education with an explicit Christian worldview could be provided in a more stream-lined way to Christian health professionals in Australia

Dr. James Yun

James specialises in clinical immunology, allergy and immunopathology. He is currently a staff specialist at Nepean Hospital in Sydney, and a clinical senior lecturer at the University of Sydney. He graduated from the University of Melbourne, completed most of his training in Sydney and then PhD in Bern, Switzerland; James first became a CMDFA member as a first-year medical student and is also involved in the NSW branch committee. He is married to Rose and has three lovely boys who keep him occupied at all times! His prayer is that we will see growth in CMDFA members especially in their 30s to 50s and see more local fellowship meetings flourish all over Australia so that we can unashamedly live out faith in practice despite all the changes taking place in our society.

National Manager

Mr. David Brown started as the CMDFA Business Manager in January 2012.  He has extensive experience in advertising, starting in the UK and moving then to Hong Kong in 1975. After 4 years in Hong Kong he joined Coca-Cola and moved with his wife and 2 children to South Korea, Singapore and Indonesia before relocating in 1987 to Sydney. After leaving Coca-Cola in 1994 he worked as a consultant and then ran his own Internet website company for 9 years until 2011 while also serving as a CEO of a Family Law firm for 5 of those years. He has served his local church as Church Warden and is still actively involved in the worship services. In addition he worked as Board member for a Christian media organisation for a number of years.