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Contact Details

Email
xaviour.walker@otago.ac.nz
Position
Geriatrician
Department
Department of Medicine (Dunedin)
Qualifications
MB ChB MPH DTM&H FRACP
Research summary
Healthy ageing, geriatrics, Pacific Island health, medical education
Teaching
  • MICN 2-6: Pacific Island mentor and tutor
  • MICN 4: Clinical teaching, lectures, tutorials and examiner
  • MICN 6: Clinical teaching, lectures and tutorials
Memberships
  • American Geriatrics Society
  • American College of Preventive Medicine
  • American College of Physicians
  • Chair, Kiwi Leadership Network USA
  • Pacific Leadership Group
  • Older Persons Health course convenor
  • Takiala Pacific Leadership Network (chair)
  • University of Otago Senate
  • World Medical Association
Clinical
  • Geriatrician and Internal Medicine Consultant
  • Preventive Medicine and Public Health

Research

Xaviour Walker is a graduate of the University of Otago Medical School and is triple American Board certified in Internal Medicine, Geriatric Medicine, Public Health and Preventive Medicine.

He completed his post graduate medical training from Harvard, Johns Hopkins Bloomberg School of Public Health, where he also received his Master’s in Public Health, National Institutes of Health (NIH) and University of California, Irvine.

He lectures internationally on healthy ageing, preventive medicine and public health. He has research interests in healthy ageing, geriatrics, tropical medicine, Pacific Island health and workforce and medical education.

Current research studies

Additional details

Honors and Prizes

  • 2014 - International Resident Leadership Award (Inaugural recipient) Royal College of Physicians and Surgeons, Canada
  • 2014 - David Patton Scholarship in Preventive Medicine Johns Hopkins Bloomberg School of Public Health
  • 2012 - Dr. Robert B. Ullian Award, Commitment to Exemplary Medical Service and Patient Care, Mount Auburn Hospital, Harvard Medical School
  • 2012 - David Frommer M.D. Award, Senior Medical Resident who Exemplifies Traits of Dr. David Frommer Mount Auburn Hospital, Harvard Medical School
  • 2006 - Deans Prize for Greatest Contribution to the Medical Faculty, University of Otago, New Zealand
  • 2006 - Top Trainee Intern Teacher, University of Otago, New Zealand
  • 2006 - Certificate for Outstanding Service and Contribution Pacific Island Health Student Professional Students’ Association

Publications

Chan, A. H. Y., Beyene, K., Lai, B., Kim, S., Wu, I., Al-Jawadi, R., … Walker, X., & Barak, Y. (2026). Impact of metformin on healthspan-related outcomes and incidence of diseases of aging in people with type 2 diabetes mellitus: A systematic review. Rejuvenation Research. Advance online publication. doi: 10.1177/15491684261462413 Journal - Research Other

Walker, X., Abey-Nesbit, R., Kayes, J., Bergler, H. U., Cheung, G., Waters, D., … Jamieson, H. (2026). The epidemiological profile of older adults of Pacific Peoples ethnicity in New Zealand assessed for home support and aged residential care. Australasian Journal on Ageing, 45(2), e70143. doi: 10.1111/ajag.70143 Journal - Research Article

Cheung, G., Wu, T., Beyene, K., Chan, A. H. Y., Jamieson, H., Lyndon, M., … Walker, X., & Rivera-Rodriguez, C. (2026). The efficacy of COVID-19 vaccination in mortality among multi-ethnic long-term care residents in New Zealand. Australasian Journal on Ageing, 45(2), e70155. doi: 10.1111/ajag.70155 Journal - Research Article

Gale, J. T., Peddie, M. C., Gerrard, D., Osborne, H., Russell-Camp, T., Waters, D. L., … Walker, X. J., & Vlietstra, L. (2025). 24-h movement patterns: Sleep, sedentary behaviour and physical activity of older retired Olympic and Commonwealth Games athletes: An observational study. Australasian Journal on Ageing, 44(4), e70097. doi: 10.1111/ajag.70097 Journal - Research Article

Vlietstra, L., Fordyce, A., Costa, E. C., Coffey, S., Walker, X. J., Whalley, G. A., & Waters, D. L. (2025). Exercise interventions to improve physical frailty and physical frailty components in older adults with hypertension: A systematic review. Ageing Research Reviews, 107, 102714. doi: 10.1016/j.arr.2025.102714 Journal - Research Article

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