Our executive team

The headspace executive team
Jason Trethowan
Chief Executive Officer

Jason Trethowan commenced as Chief Executive Officer at headspace in February 2017.

Jason has spent the bulk of his career in the health sector where he has been driven by a passion to improve health services and access for Australians. Before beginning at headspace he spent 18 months as CEO of the Western Victoria Primary Health Network where he implemented a new organisational structure and led the transition of three Medicare Locals into a single PHN.

He was also CEO at Barwon Medicare Local in Geelong and CEO of the General Practitioner’s Association of Geelong. Earlier in his career Jason held managerial roles within Ballarat and Geelong Health Services.

Jason is involved in many national health system networks and is currently a company director with Barwon Health and Professionals with Alzheimer’s (PALZ).

Jason holds an MBA from Deakin University and has completed graduate degrees in Health Informatics and Health Management at Monash University and La Trobe University.

Jason lives in Geelong with his wife and three young children and is an active member of the local community.

Debra Rickwood
Chief Scientific Advisor and Executive Director Research and Evaluation

Debra is the Chief Scientific Advisor and Executive Director of Research and Evaluation, and has been with headspace National since 2011.

She is a Professor of Psychology at the University of Canberra, Fellow of the Australian Psychological Society (APS) and member of the APS College of Community Psychologists. Debra was a youth worker before completing her PhD, which was one of the first studies of young people’s help-seeking behavior for mental health problems. She has been researching the factors that affect young people’s mental health and help-seeking for over 30 years. Debra has a broad base of experience in research, practice, policy and service development, and set up the headspace centre in Canberra.

Her work spans the spectrum of interventions for mental health – from mental health promotion for all young people, prevention and early intervention, to recovery and continuity of care for young people seriously affected by mental illness. She has a strong interest in the use of technology, the role of families, and the need for health system service reform to better support young people’s mental health. Debra has produced over 200 publications and been a chief investigator on several National Health and Medication Research Council, as well as other, grants researching in the field of youth mental health.

Julia Smith
Executive Director headspace Services

Julia is responsible for the leadership and management of services delivered directly by headspace National Youth Mental Health Foundation Ltd. nationally, including: eheadspace online and telephone counselling service; headspace in schools programs; Digital Work and Study and e-mentoring services; headspace Adelaide and hYEPP services; and the headspace centre network support services, including the headspace Model Integrity Framework and, trademark licensing.

Julia has over 25 years’ experience in the Australian health sector, predominately in the private health sector. With a background in business, Julia has significant commercial experience in leading complex assignments including: major health mergers and acquisitions; national health funding portfolios for private hospital groups; organisational wide strategic planning; communications and stakeholder management. 

Julia has worked at headspace since 2010, and has seen the organisation expand from 30 headspace centres to the current network of 110 funded headspace services. She is a passionate advocate for establishing sustainable services and improving access to high quality health care for all Australians. 

Simone Williams
Executive Director Strategic Communications and Marketing

Simone Williams is the Executive Director of Strategic Communications and Marketing for headspace, the National Youth Mental Health Foundation. With over ten years experience as a marketing and communication executive, she has worked in organisations that span the public, private and not-for-profit sectors.

Prior to headspace, she worked at Medibank Private driving an industry change agenda to engage health providers and keep healthcare affordable. In the public sector, she led the marketing and communications approach that enabled Health Workforce Australia to deliver contentious, large-scale workforce reforms across health and higher education. She also led the positioning and communications that drove the first overhaul of the WorkCover Scheme in South Australia.

Simone is a Board Director for the Victorian Deaf Society and is actively involved in the 60th Anniversary Communications Council for the Duke of Edinburgh Awards.

She holds a Masters in Communication Management and a Bachelor of Arts in Australian Studies.

Vikki Ryall
Executive Director Clinical Practice

Vikki Ryall joined headspace National Youth Mental Health Foundation as the Clinical Manager in 2009.

She is trained in a range of different therapies and has continued clinical work with young people with a variety of mental health problems throughout various roles with the organisation.

Vikki has extensive experience in management within youth mental health organisations and has worked in youth mental health for most of her 20 year career.

She has extensive clinical experience with young people who are difficult to engage, high risk, and present with complex needs.

Vikki managed the set up and development of eheadspace, the online and telephone mental health service for young people.

In her current role, Vikki oversees clinical programs for headspace at a national level. 

Debbie Mann
Executive Director People and Culture

Debbie Mann is the Executive Director of People and Culture at headspace, responsible for Human Resources, Organisational Development and Quality and Risk.  She partners with leaders to identify solutions to service and workforce challenges, to embrace and adapt to change and to proactively seize opportunities to strengthen the quality services for young people. 

Debbie brings a people and commercial lens through her 18 years of experience across the broader health sector including medical publishing, pharmacy and mental health working for both profit and not-for-profit organisations. 

Starting with headspace in August 2008, she has played a key role in the establishment and growth of the headspace Services including eheadspace, headspace in Schools and Digital Work and Study.

Debbie is committed to the values of ‘The headspace Way’ and creating ways for employees to engage in a positive workplace culture setting headspace on the path of being a truly great place to work.   

Holding a Master of Management, Debbie is passionate about building organisational capability through a focus on developing leaders to meet current and future needs.

Anna Hall
Executive Director Digital and Technology Services

Anna Hall is the Executive Director of Digital and Technology Services at headspace, ensuring that headspace stays at the forefront of delivering digitally enabled youth mental health services. The role is central to providing strategic leadership for the organisation’s digital and technology services which positions headspace as a leading system innovator aligned with the future direction of the organisation.

The Digital and Technology Services domain covers day to day operations, data and reporting services as well as technology and digital innovation and service enablement.

Commercially astute IT Executive with over 20 years of expertise leading organisations through significant technology change. Highly accomplished in corporate governance, strategy and innovation, including designing and deploying new products/technologies into large scale organisations.

Anna joined headspace in April 2018 after spending 4 years as a Principal Consultant pioneering the strategic direction, as related to current and future state business / service delivery requirements for high-profile clients within complex organisations.  This included enterprise architecture and business strategy consulting to Victorian and NSW Government as well as the health, finance and telecommunications sector. Prior to that Anna led large teams of up to 200+ highly specialised Information technology professionals in several General Manager Positions within Telstra.

A people-orientated leader and mentor with a keen interest in empowering employees to reach their full potential and become future industry leaders. Anna has a passion for rural Victoria, and runs a successful farm in Gippsland.

Adam Holmes
Chief Financial Officer

Adam Holmes joined headspace as the Chief Financial Officer and Company Secretary in 2019 and is responsible for providing strategic leadership for the organisation’s corporate and financial governance. Overseeing finance, corporate service, legal and corporate governance, Adam identifies and implements strategies which positions headspace for growth and stability aligned with the future direction of the organisation.

A certified practicing accountant, Adam is a value-based finance executive with 25 years’ experience in finance roles across a broad range of industries and is used to operating in fast-moving complex environments and being responsible for delivering key performance improvements.

Adam took up the role after spending nearly four years as the Chief Operating Officer at the Alannah & Madeline Foundation - a large national not for profit organisation protecting children from violence and its devastating impact. 

As a father of two, Adam was attracted to headspace by the vision that all young Australians are supported to be mentally healthy and engaged in their communities.