Who we are


Tracy Mackey is the NDIS Quality and Safeguards Commissioner. She commenced in the role in January 2022 and has been appointed for a three-year term.

Tracy has extensive professional experience in policy, programs and regulation across a number of portfolios including town planning, housing, environment and social services.

She has deep experience in government having spent time in all three tiers and comes to the NDIS Commission most recently from the NSW public sector. Tracy was most recently the Chief Executive Officer at the Environment Protection Authority leading the organisation through a period of transformation. During her time with the Commonwealth, Tracy held senior executive positions in immigration, health and ageing, community and emergency services.

Tracy has also spent time at the executive level at a large not for profit provider, at a multi-national consulting firm and leading her own consulting practice. Complementing her executive roles Tracy brings experience as a non-executive director on a number of Boards.


Samantha Taylor commenced in the role of Registrar with the NDIS Commission in March 2018. Prior to this, Ms Taylor was Executive Director of NDIS Implementation in the NSW Department of Family and Community Services. In this role, she led NSW negotiations on the NSW NDIS agreement, and managed all facets of the NSW transition to the NDIS, giving effect to the $6 billion agreement with the Australian Government. She also advised on the transfer of NSW Government-operated specialist disability services to the non- government sector. Ms Taylor held senior executive roles for over 15 years in the NSW public service working in human and social services portfolios.

In 2017, Ms Taylor was awarded a Public Service Medal for her leadership in disability reform in NSW.

Chief Operating Officer

Jason Stott joined the NDIS Commission as Chief Operating Officer in May 2018. Mr Stott has extensive experience in governance, program management and corporate operations. Mr Stott’s achievements include strategic governance reform, leading complex programs, and developing and implementing high profile initiatives and measures. He has led whole-of-government teams deployed to closely scrutinise international disasters, including the Bali bombings, the Middle East during the evacuation crisis, and the Christchurch earthquake.

Mr Stott is an alumnus of the Jawun program, in which he worked on competitor analysis, raised venture capital, and improved executive control within Indigenous social enterprises. He is also an Army Reserve Major who deployed on Operation CRANBERRY, Operation ASTUTE and Operation QUEENSLAND FLOOD ASSIST. In 2012, Mr Stott was awarded a commendation for outstanding professionalism, dedication to duty and commitment and, in 2015, he received the Prince of Wales Award, which sponsored study on leadership at the University of British Columbia in Vancouver Canada.

Senior Practitioner

Jeffrey Chan commenced as the Senior Practitioner, Behaviour Support on 9 July 2018. Mr Chan has worked in disability and health services for nearly 30 years in government, non-government and statutory roles. He was the inaugural Victorian Senior Practitioner with the responsibility of protecting the rights of people with disability subject to restrictive interventions and compulsory detention. Mr Chan was also Queensland’s inaugural Chief Practitioner and Director of Forensic Disability (a Governor-in-Council appointment) where he was responsible for protecting the rights of people with cognitive impairment subject to restrictive practices and those in the forensic disability setting. Prior to his current role, Jeffrey Chan was Deputy CEO of the largest intellectual disability service provider in Singapore.

Mr Chan was an International Rotary Scholar to the University of Sydney 1988. He received the Rotary Club of Ryde Pride of Workmanship Award in 2002 for this work in rehabilitation services. He was also a Finalist in the Australian Human Rights Award 2010 for Community (Individual) category for his work in protecting the rights of people with disabilities subjected to restrictive interventions. He continues to research and publish in international refereed journals in the area of disability.

Complaints Commissioner

Jenny Humphrys is the Acting Complaints Commissioner. She commenced in the role December 2021, and has more than twenty five years’ experience delivering on time and within budget for the Commonwealth Government. Jenny has extensive experience working with statistics, turning data into information to enable evidence to support informed decision-making.

Jenny has worked in the Department of Social Services leading the Data Access Branch, providing the department’s centralised data access capabilities, that supports the data needs for policy development, servicing the Ministers Office, and public releases. She has 17 years’ experience at the Australian Bureau of Statics, leading a team to deliver economic statistics providing information on how the labour market is performing, how it is changing over time, and insights into the economic, population and social dimensions of work.

A career highlight was working as the Australian Taxation Office/Australian Bureau of Statistics strategic partnership manager, where she delivered Single Touch Payroll data (STP) as official ABS statistics to inform on economic recovery from COVID-19. She provided near real time picture of jobs at a time when Government needed the information to respond to an unprecedented national emergency, without adding extra reporting burden for businesses or households.

International experiences includes a 12-month posting as Strategic Advisor to the Seychelles National Bureau of Statistics to progress their statistical reform package, and capability building in Indonesia. She developed the Australia Labour Account, a model to capture different data sources and present a coherent picture of jobs, employed persons, hours worked and wages. This innovation received international recognition published in the International Statistical Journal of IOS and presenting at the United Nations Statistical Institute for Asia and Pacific.

Deputy Registrar

Melissa Clements is Deputy Registrar. Melissa commenced in the role of Deputy Registrar with the NDIS Commission in January 2019, and has more than 25 years of experience in the disability sector. This includes leading policy and program delivery and reforms supporting more than 100,000 students with disability in NSW public schools and work to support the transition to NDIS and its interface with education. Melissa has also held a number of roles with the NSW Ombudsman and Community Services Commission oversighting community and disability service provision, as well as a range of direct service delivery roles supporting people with disability.

General Counsel

Carolyn Strange commenced with the NDIS Commission in July 2018 as General Counsel. Ms Strange came to the NDIS Commission with a long and varied career as a lawyer and regulator in the NSW and Commonwealth public sectors, most recently as General Counsel at the NSW Public Service Commission, after starting out as a commercial litigation solicitor. Her other public sector legal experience has included positions in the Commonwealth Office of General Counsel, the NSW Environment Protection Authority, NSW Parliamentary Counsel’s Office and the Office of the NSW Solicitor General and Crown Advocate.

Ms Strange has also held senior management roles in non-legal positions with regulatory dimension, including Director, Quality Assessment and Regulation in the Early Childhood Education and Care Directorate of the NSW Department of Education and Director, Contaminated Sites in the NSW Environment Protection Authority.

Branch Head – North Central West

Mr Philip Halton has more than 30 years’ experience in public policy, administration and regulation, acquired as a public servant and advisor across the Commonwealth, New South Wales and Queensland governments and as the head of a national industry association.

Mr Halton has extensive and challenging experience in frontline regulation. As the Deputy Commissioner of the Queensland Building and Construction Commission, he led Queensland’s response to the flammable cladding crisis and the enforcement of major new building safety and market fairness reforms. In prior roles, he led major prosecutions, led reforms in safety regulation and compliance programs, and worked under the scrutiny of Special Commissions of Inquiry.

Philip is an active member of the national advisory committee of the ANZ School of Government’s National Regulators Community of Practice.

Branch Head – South East

Tim Baker is acting Branch Head – South East. Tim has held senior and executive management roles in state and commonwealth departments for the past 15 years. Most recently Tim was a Director and member of the Housing SA Executive team and was responsible for the property and contract management portfolio. Tim has held senior roles in human services, housing and child protection in state government and was previously the state manager for the Australian Sports Commission’s AASC program. Tim’s background in regulation includes oversight of the Housing Improvement Authority and Community Housing.