Dr Christmass is a Fellow of the Chapter of Addiction Medicine (RACP) and the RACGP and holds a PhD in research science. He works as a Consultant in Addiction Medicine with the community substance use disorder treatment service for Fremantle and its surrounds, as well as with Fiona Stanley Hospital Alcohol and Other Drug Consultation-Liaison service. Dr Christmass is Adjunct Clinical Associate Professor at Curtin University Medical School and Adjunct Research Fellow at the National Drug Research Institute. His research collaborations include partnerships with the Kirby Institute (UNSW), the National Centre for Clinical Research on Emerging Drugs, and the National Drug and Alcohol Research Centre (UNSW). He is the current clinical member of the Community Program for Opioid Pharmacotherapy Management Committee in WA. In clinical, educational, and research work, Dr Christmass is dedicated to advancing evidence-based treatment for substance use disorders and improving health outcomes for marginalised individuals and communities.

Professor Suzanne Nielsen (BPharm BPharmSc[Hons] PhD MPS FANZCAP (AddMed, Research)) is the Deputy Director of the Monash Addiction Research Centre (Monash University), and a registered pharmacist with extensive experience in the area of drug treatment and harm reduction. Suzi is passionate about improving treatment for opioid dependence. Over her career she has worked on clinical guidelines, supported policy change and is currently working on established new medicines and models of care aimed at increasing access to quality evidence-based treatment.

Professor Michael Doyle is a Bardi Man and a research-focused academic at the University of Sydney. He has worked in Aboriginal health for over 20 years, commencing his career as an Aboriginal Health Worker at the Broome Regional Aboriginal Medical Service. Michael moved into Aboriginal health research in 2008 and utilises a mixed-methods approach in his work. Presently, Michael is the Head of the First Nations health team at the Edith Collins Centre for translational research in alcohol, drugs, and toxicology. His research aims to improve health service delivery for Aboriginal and Torres Strait Islander people who use alcohol and/or other drugs. Michael's research also has a focus on improving health service delivery for those in the criminal justice system. Michael is an active member of the Aboriginal community and has served on Aboriginal community-controlled organisation boards. He served as co-chair of the Aboriginal Health and Medical Research Council of NSW's Human Research Ethics Committee 2021 to 2026 (May).

Paul is CEO of Peer Based Harm Reduction WA (PBHR WA), Western Australia’s only peer-based consumer-led AOD service, which provides free health and harm reduction services for people who use drugs. Paul has worked at PBHR WA for >25 years, delivering and coordinating outreach services, overdose prevention, take-home-naloxone, and peer-education projects, while providing consultancy to researchers and policy makers and workforce development to other front-line agencies. Paul has previously worked as a Drug & Alcohol Officer for the State-wide Specialist Aboriginal Mental Health Service; an educator & consultant for the Transnational Institute (in China and Myanmar); and a trainer for the Burnet Institute. Paul is committed to addressing stigmatisation directed at, improving the health equity of, and promoting the fundamental human rights of, people who use drugs. In all his work Paul strives to bring the voices and living experience of people who use drugs to research, policy, and practice.