Key personnel

Board of Directors

James E. Walsh

James E. Walsh

  • B.Com, MBA, FCA, MAICD.
  • Director since August 2005
  • Chairman
  • Chairman Remuneration & Capability Committee
  • Member Strategy & Risk Committee
  • Member Investment Committee
  • Director – GMHBA Land Co Pty Ltd
  • Director – GMHBA Services Pty Ltd
  • Director – health.com.au Pty Ltd
  • Director – GMHBA Health Pty Ltd
  • Director – A.G. Coombs Group Pty Ltd
  • Chartered Accountant
Gerald Miller

Gerald Miller

  • BA, LLB. GAICD.
  • Director since September 2007
  • Chair Audit & Compliance Committee
  • Member Remuneration & Capability Committee
  • Director – GMHBA Services Pty Ltd
  • Director – health.com.au Pty Ltd
  • Deputy Chair – The Geelong College Ltd
  • Director – ICT Geelong Ltd
  • Chair – AICD Director Nexus, Geelong
  • Lawyer and General Counsel, formerly a registered psychologist
Sue Renkin

Sue Renkin

  • RN, MBA, FCDA, GradDip Corp Gov, MAICD.
  • Director since July 2009
  • Chairman Health Services Committee
  • Member Remuneration & Capability Committee
  • Director – GMHBA Services Pty Ltd
  • Director – health.com.au Pty Ltd
  • Managing Director – Intuitively Focussed Pty Ltd
  • Chairman – Monash Bio Medical Imaging Laboratories
  • Chairman – Southern Metropolitan Cemeteries Trust
  • Chairman – Victorian Centre for Sustainable Chemical Manufacturing
  • Member – Global Leadership Board International Women’s Forum
  • Director – Victorian Rugby Union
Brian Benger

Brian Benger

  • B.Ec (Hons), AdvDip Fin Services (Superannuation), FAICD.
  • Director since February 2011
  • Chairman Investment Committee
  • Member Strategy & Risk Committee
  • Director – GMHBA Land Co Pty Ltd
  • Director – GMHBA Services Pty Ltd
  • Director – health.com.au Pty Ltd
  • Director – GMHBA Health Pty Ltd
  • Chairman of Mercer Financial Advice (Australia) Pty Ltd
  • Director of Mercer Superannuation (Australia) Ltd
  • Director of Mercer Investments (Australia) Ltd
  • Director – Enginsure Pty Ltd
Vicky Papachristos

Vicky Papachristos

  • BE, MBA, GAICD.
  • Director since November 2011
  • Member Audit & Compliance Committee
  • Member Strategy & Risk Committee
  • Director – GMHBA Services Pty Ltd
  • Director – health.com.au Pty Ltd
  • Director – Currant Marketing Pty Ltd
  • Director – Coventry Group Limited
Marie Bismark

Marie M. Bismark

  • MBChB, LLB, MBHL, MPH, FAFPHM, FAICD.
  • Director since March 2013
  • Member Investment Committee
  • Member Health Services Committee
  • Director – GMHBA Services Pty Ltd
  • Director – health.com.au Pty Ltd
  • Director – The Young and Well CRC
  • Director – Summerset Group Holdings Limited
Dr. Denis Napthine

Dr. Denis Napthine

  • BVSc. MVS MBA
  • Director since August 2016
  • Member Audit & Compliance Committee
  • Member of the Health Services Committee

GMHBA Executive Team

Mark Valena

Mark Valena

Chief Executive

Mark Valena is an experienced Business Executive. He came to the helm at GMHBA in early 2008 following seven years as the CEO of Medical Defence Association Victoria. MDAV was Victoria’s largest medical professional indemnity insurer (with an 18% national market share) and as a not-for- profit organisation, in a highly regulated insurance market operating in the health sector, provided a sound experience base for his current role at GMHBA. Mark has significant experience in the negotiation and implementation of mergers and business transitions at MDAV, NRMA and Fortis Insurance. Through these transitions Mark was able to create an environment of goodwill and navigate through many complex agendas leading to retention of members and employees. Mark is an Australian Chartered Accountant who has a Bachelor of Business and a Graduate Certificate in Innovation & Service Management.

Dr. Sarah Leach

Dr Sarah Leach

General Manager Health Services

Sarah is responsible for leading GMHBA’s health related business services team.

Sarah is a highly-respected and experienced leader in the health services industry. Her experience in management and consultancy in healthcare, community and welfare services has spanned over 30 years across Victoria, and particularly in the Barwon South-Western region in Victoria.

She has held senior roles in nursing, health and community sector service management and service development, health and business consultancy, and health sector education. She has also held extensive board and committee membership positions in both the health and community sectors.

With strong networks in health and community sector agencies, local, state and federal governments, and tertiary education institutions across Victoria, Sarah is a key part of GMHBA’s executive management team.

Sarah holds a Bachelor of Nursing with Honours, as well as a Doctor of Philosophy (Ph.D.), and is an Honorary Fellow in the Executive Dean’s Office at the Deakin University Faculty of Health.

Tony Hall

Tony Hall

General Manager Private Health Insurance

Tony is responsible for leading GMHBA’s Private Health Insurance team which includes GMHBA Health Insurance, Frank Health Insurance, Health.com.au and Budget Direct Health Insurance.

With an extensive 15 year health insurance background and more than 18 years in corporate executive positions, Tony has gained experience and capability across a number of key functional areas including sales, marketing, product, provider relations and customer service delivery.

Tony holds a Bachelor of Business and has experience leading the development of corporate strategy, major strategic projects, productivity improvements and customer value proposition redesign.

Paul Hulett

Paul Hulett

Chief Information Officer

Paul is responsible for leading the overall GMHBA Limited digital strategy.

With a risk based approach, Paul has delivered transformational change to GMHBA digital business while maintaining the traditional trusted IT organisation. Paul holds a Bachelor of Computer Systems Engineering from RMIT and has proven success with over 20 years’ experience in IT leadership, IT delivery, business innovation, digital business and complex financial management.


Matthew Vagg

Matthew Vagg

Executive Manager Brand & Marketing

Matt is a strategic marketing professional with extensive experience at leading consumer, sports and leisure organisations including St Kilda Football Club, Intrepid Travel, Golf Australia and Mt Buller Ski Resort.

With a successful track record in building marketing strategies and plans to meet brand and sales targets, Matt has lead teams to deliver superior results, often within tight time frames and limited budgets.

Matt joined GMHBA in 2011 and led the re-brand of GMHBA to refresh and revise the brand to what you see today.

Erica Traicos

Erica Traicos

Chief People & Culture Officer

Erica is an executive leader with over 20 years of human resources and organisational effectiveness experience across large and mid-sized financial, professional services, mining and public policy industries.

Prior to joining GMHBA in early 2017 as Chief People & Culture Officer, Erica worked for Guild Group, BHP Billiton, Grattan Institute and ANZ Bank in executive human resources and generalist operations, project and planning roles. She has also been involved in mergers & acquisitions, start-ups, turnaround and transformation programmes throughout her career.

Erica specialises in partnering with top teams and Boards to transform organisations to lift results and value for customers, employees and other stakeholders alike. Erica holds a Bachelor of Behavioural Science, a Graduate Diploma in Business and various professional accreditations.

Paul Chow

Paul Chow

Executive Manager – Projects

Paul is an experienced executive with a strong background in start-ups and transformation. As GMHBA’s Executive Manager – Projects, Paul’s team are expanding the services and value that members and our communities derive from GMHBA. Paul commenced his career with Ernst and Young and then established his own project management practice and change management practice. After selling his business to Oracle Corporation, he was recruited to join the executive team of an eBusiness consultancy start-up out of MIT in Boston. Paul was a member of the executive team that listed this company on the NASDAQ after expanding the business globally.

Since then, Paul started consulting in the areas of organisational achievement and performance in Australia. His major clients included ANZ, Australia Post, NAB, Medibank Private, Fosters and TABcorp. Paul’s consulting and coaching background will ensure that the diversification team is focused on delivering significant value to members and the communities that we operate in.

Andrew Wooley

Andrew Woolley

Executive Manager Sales & Service

Andrew joined GMHBA in 2010 and has held a number of roles across the business spanning sales, service, strategic partnerships and customer relationship management. Andrew is now the Executive Manager for Sales & Service for our Private Health Insurance business and leads a number of teams including our contact centre operations, our branch network, training, intermediaries, corporate partners and our process delivery departments.

Andrew has a wealth of experience in developing and delivering best practice sales, service, training and continuous improvement initiatives across a wide variety of operations. Andrew has a major focus on achieving customer service excellence, ensuring that customer expectations are consistently met and often exceeded.