Our People

Mark Robertson is a private consultant and non-executive director who specialises in research and educational publishing, organizational development, business in the Asia Pacific, and career and leadership mentoring. With 40 years in the publishing industry, Mark has extensive senior executive and board experience. He is currently the Development Director for Asia Pacific for CHOR Inc (CHORUS), Deputy Board Chair of the Media Centre for Educational Research Australia (MCERA) and is a Fellow of the Australian Institute of Company Directors.

Ms Angela Ryan has over 30 years’ experience in hospitals and public sector organisations as a clinician, health informatician and executive across local, state and federal settings, leading large scale digital health programs and policy reform. More recently, Ms Ryan joined Oracle Health as a Lead Healthcare Executive. She was a founding Fellow, Vice Chair and current Board non-executive director of the Australasian Institute of Digital Health, former President of the Australasian College of Health Informatics, former Chief Clinical Information Officer at the Australian Digital Health Agency and Churchill Fellow. Ms Ryan is a Graduate of the Australian Institute of Company Directors.

Guy Cooper is a technology entrepreneur and the Managing Director of Wave Digital. He is a Chartered Accountant and has more than 23 years’ experience as a Senior Executive in the technology and finance sectors across a range of industries, having previously held CFO/COO and Company Secretary roles. Guy is also a Board Director for Eating Disorders Victoria.

Tony Evans has financial and corporate governance experience as a senior executive and a board member in the health, aged care, education, resources and not-for-profit sectors. Tony is currently a Board Director of the Australasian College for Emergency Medicine and the Australian Dental Council Ltd and a member of the Optometry Board of Australia. He has a Bachelor of Business and a Diploma in Education and is a Fellow of CPA Australia, the Governance Institute of Australia and the Australian Institute of Company Directors.

Dr Elizabeth Marles is the President of the Royal Australian College of General Practitioners (RACGP) and has been a member of the RACGP Council since 2008. Liz is Director of the Hornsby General Practice Unit, which specialises in GP Teaching, particularly registrar remediation and prevocational education. For the past 15 years Liz has also been a GP at the Aboriginal Medical Service in Redfern, where she is a GP supervisor with a special interest in diabetes, and presenter in the aboriginal health training component of GP Synergy’s registrar teaching program. Liz is a Fellow of the Australian Institute of Company Directors and was a foundation Director on the General Practice Education and Training Board. She is passionate about general practice training, Aboriginal health and the future of general practice.

Dr Hung The Nguyen is a General Practitioner in Private General Practice and in an Aboriginal Community Controlled Health Service. Hung currently sits on these boards, South East Melbourne Primary Health Network and Health Education Australia Limited. He is the inaugural Censor for the RACGP National Aboriginal and Torres Strait Islander Health Faculty. He is a Councillor on the AMA Victoria Council and the Victorian Clinical Council where he is also on the Executive Committee. Through his directorship appointments, he is concerned with positive patient journeys through the health system and patient engagement in the quality improvement process in health care.

Professor Debra Rowett B.Pharm, Adv Prac Pharm, FANZCAP, FPS Discipline Leader Pharmacy, Clinical and Health Sciences, UniSA and Director of the Drug and Therapeutics Information Service (DATIS), Southern Adelaide Local Health Network. She has more than 30 years’ experience in the quality use of medicines, inter-professional practice, health policy and workforce development, with special interest in implementation science, aged care, and palliative care. Debra is the immediate past President of the Council of Pharmacy Schools: Australia and New Zealand.

Leigh has been loving her work in Medical Publishing for over 20 years now. She started professional life as a Pharmacist, tried her hand briefly in Academia, then eventually fell into, and relished, a junior editor role at the British National Formulary in London. A fortunate convergence of events led Leigh to relocate to Melbourne to join Therapeutic Guidelines in 2013—and it’s been never a dull moment since then.

Leanne Russell joined Therapeutic Guidelines in 2018 as Company Secretary. She holds a range of business and governance qualifications including a Master of Business Administration and is an Associate Member of the Governance Institute of Australia. Leanne has extensive experience in providing governance advice to boards and executive management in the not-for-profit and public sectors. Outside of work she enjoys cooking, gardening and photography trips.

Emma Barker is an Executive Director at Therapeutic Guidelines Limited, leading the Sales and Marketing team and working directly with customers and partners across the health sector. With over 18 years of experience across the not-for-profit, health information, and legal technology sectors, Emma brings deep expertise in strategic leadership, client relationships, and business development.

Known for her authentic leadership style and commitment to mission-driven work, Emma has held senior executive roles spanning General Manager, Chief Client Officer, and Global Head of Sales. Her career has spanned national and global markets, with a consistent focus on building high-performing teams and delivering value through meaningful partnerships - work she finds particularly rewarding in a mission-driven organisation like Therapeutic Guidelines.

Con is responsible for the technology function at Therapeutic Guidelines, driving business and customer value in support of its strategic vision. He has delivered large-scale technology transformations, global technology strategies, industry-wide applications and projects, and governance frameworks for some of the world's largest organisations.

Con holds an MBA, B.Tech, and GAICD. Outside work, he enjoys family, friends, and scuba diving.

Sonia leads the People and Culture Directorate at Therapeutic Guidelines Ltd.

As a values-driven senior HR and business leader, Sonia brings to TGL extensive experience in medium to large for profit and not for profit organisations across many industry sectors, significant breadth of HR generalist expertise and experience and strong commercial and business acumen. Sonia develops strategies that drive organisational performance and compliance, workplace planning and transformation, organisational design, system and process improvements, workforce data analysis through technology and automation, workforce engagement, talent identification, leadership and development and sustainable growth.

Known for her supportive, collaborative, friendly yet pragmatic approach, Sonia implements innovative solutions that balance people, process, and performance as well as contributing to the finance, risk and governance profiles of the organisation. She fosters a work environment where teams can thrive and deliver their best work and creates frameworks and environments that enable people to contribute meaningfully to organisational success while fostering a values-driven, high-trust culture.

Sonia holds an MBA, a Graduate Diploma of business in HR and is a professional member of the Australian Human Resources Institute and the Australian Institute of Company Directors.