Key personnel

Board of Directors

Claire Higgins - Chair

  • B. Comm, CPA, Fellow AICD, Fellow Institute of Public Administration Australia
  • Director since September 2019
  • Chair People and Culture Committee
  • Member Audit Committee
  • Member Investment Committee
  • Chair, REI Superannuation Pty Ltd
  • Director, Ryman Healthcare Limited
  • Trustee, Helen McPherson Smith Trust
  • Director – Margin Clear Pty Ltd


Brian Benger

Brian Benger

  • B.Ec (Hons), AdvDip Fin Services (Superannuation), FAICD.
  • Director since February 2011
  • Chair Investment Committee
  • Member Risk and Compliance Committee
  • Chair - Mercer Financial Advice (Australia) Pty Ltd
  • Director – Enginsure Pty Ltd
  • Director - Lendex Group Ltd
  • Director - National Vineyard Fund of Australia Ltd
  • Director - Kayinga Vineyard Limited

Vicky Papachristos

Vicky Papachristos

  • Director since November 2011
  • Chair Risk and Compliance Committee
  • Member People and Culture Committee
  • Director – Big River Industries Ltd
  • Director – Aussie Broadband Ltd 
  • Director – Scale Investors Pty Ltd

Marie Bismark

Marie M. Bismark

  • Director since March 2013
  • Member People and Culture Committee
  • Member Risk and Compliance Committee
  • Director – Summerset Group Holdings Limited
  • Director – Royal Women’s Hospital

Dr. Denis Napthine

The Hon Dr Denis Napthine AO

  • Director since August 2016
  • Director - National Disability Insurance Agency (NDIA)
  • Member Audit Committee
  • Member People and Culture Committee
  • Patron Solve Disability Solutions

Mike Hirst

Mike Hirst

  • B. Com, SF Fin, MAICD
  • Director since July 2018
  • Chair Audit Committee
  • Member Investment Committee
  • Deputy Chair, Racing Victoria Limited
  • Director - AMCIL Limited 
  • Honorary Member, Business Council of Australia
  • Director - AMP Limited


Sandy Morrison

  • BHA, MBA, Prof Cert in Health Systems Mgt.
  • Director since April 2021
  • Member Audit Committee
  • Member Risk and Compliance Committee
  • Chief Executive Officer, Barwon Child, Youth & Family (BCYF)

GMHBA Executive Team



David Greig

Chief Executive Officer

David joined GMHBA in May 2021 bringing with him a wealth of experience in financial services, management consulting and health insurance. His most recent role was General Manager for HBF on the East Coast. David’s broader business experience comes from Booz & Company (now Strategy &), Bankwest, Bank of Queensland and Medibank. David is excited about contributing to GMHBA’s rich history in Geelong as a local, member-focused health insurer and employer of choice. He is committed to making a genuine difference to the health and well-being of our customers and a positive contribution to the communities in which we operate. David has a Master of Business Administration and a Bachelor of Science with Honours in Psychology.

Wes Self

Wes Self

Chief Operating Officer - Health Insurance

Wes is the Chief Operating Officer – Health Insurance at GMHBA Limited. The key accountability areas of his portfolio include Customer Engagement and Operations, Product, Digital and Growth, Customer Portfolio Management and Benefits Management (inclusive of hospital contracting) for the business.

Throughout his 10 years at GMHBA, he has held a number of key roles including Chief Financial Officer, Group Financial Controller and Commercial Manager of Digital Business running GMHBA’s digital brands.

Wes is a Chartered Accountant with over 10 years at KPMG Melbourne working in Private Enterprise, with a focus on privately-owned client groups, corporate group structuring and incorporations, financial reporting and advisory, taxation and audit.

Matthew Vagg

Matthew Vagg

Chief Operating Officer - Health and Retail 

Matt is responsible for ensuring GMHBA continues to strengthen and expand its value proposition locally in Geelong and throughout regional Victoria, as the organisation builds and executes new health care programs, pathways and businesses to support our communities by integrating health services and private health insurance.

With a successful track record of building effective commercial strategies to drive strong growth, Matt’s professional background spans senior marketing positions at prominent organisations across a diverse range of industries from insurance to travel and tourism, sport and entertainment.

Matt joined GMHBA in 2011 and previously led the organisation’s multi brand strategy, optimising each brand within the group portfolio to meet customer growth objectives. A strong people leader, Matt has proven experience in motivating and inspiring large teams to excel, with an expertise in negotiations and stakeholder management.

Kate Barlow

Chief of People & Culture

Kate has an extensive career with over 15 years senior executive experience in the health and community services sectors, as well as operating her own consultancy business.

To date, Kate’s leadership roles have focused on strategic planning, relationships and thinking to identify and drive organisational performance. She has demonstrated leadership expertise and capability, particularly during times of transformation, organisational development and reform. Along with extensive communication and engagement skills, Kate brings to GMHBA strong corporate and clinical governance experience, analysis and critical thinking capability and the ability to translate vision, strategy and policy into practical application.

Kate holds a bachelor of Social Work and a Bachelor of Arts (Sociology).