Our Management Team

David Brajkovic

Chief Executive Officer

BAppSc, GAICD

Appointed November 2024

David has over 20 years’ experience as a senior executive and non-executive director. With a background in business improvement and leadership in both health insurance and healthcare services, David is an authentic, considered and pragmatic leader with a proven track record in new market development, acquisitions, strategy execution, operational performance, business improvement, project management and leading large multi-disciplinary teams.

Tanya Haines

Deputy Chief Executive Officer

AssDip BusMktg GradCertBusMgt CertGovPrac&RiskMgt

Appointed November 2023

Tanya has worked at Defence Health for 10 years and prior to her current role was the Chief Risk Officer and Head of the Project Management Office.  Tanya has 25 years' experience in the insurance industry, predominantly in health insurance, gained through leadership roles in risk management, marketing, product and project management.

Philippa Marshall

Company Secretary, Chief Legal Officer

LLB, GAICD, FGIA

Appointed May 2024

With over 25 years’ experience, Philippa is a lawyer specialising in financial services, commercial and corporate governance matters. Her extensive legal expertise, in-house experience and practical skills guide her legal and governance solutions.

John Thomopoulos

Chief Financial Officer

BBus(Acc) FCPA

Appointed June 2023

John has been with Defence Health for eight years as the Financial Controller and recently appointed as Chief Financial Officer. He has 15 years' expertise in chartered firms, financial services, and the private health insurance industry. With his extensive background in the private health insurance sector, John is deeply committed to the industry and excels in setting business goals and performance indicators that clearly define organisational success.

Justin Watts

Chief Risk Officer

MAppFin BComm BIntBus CBCI 

Appointed November 2023

Justin is responsible for leading the risk and compliance functions and driving a strong risk culture at Defence Health. He most recently held the position of Head of Risk and has held a range of leadership roles over the last 10 years in the financial services sector.

Tania Cumming

Chief Member Services Officer

BCom

Appointed November 2023

Tania has more than 20 years' experience across a range of service-based industries, supporting organisations and focusing on improving the customer experience. Her passion drives the delivery of better outcomes for Defence Health members.  

Alex Mehl

Chief Information Officer

BIS, MBA, GAICD

Appointed September 2024

With over 20 years’ experience, Alex is an accomplished and experienced technology executive. He’s previously held executive and senior leadership roles across a range of sectors with a track record of success. He’s passionate about helping organisations deliver on their strategic goals through the innovative use of technology.

Kelly Dickson

Chief People Officer

AssDip HRM

Appointed August 2016

Kelly has been with Defence Health for the last seven years and brings extensive HR experience having performed in various leadership roles in finance and fast moving consumer goods over the past 18 years. She is passionate about building a high performance values-based culture where our people feel motivated to perform at their best and are able deliver great results to our members.  Kelly believes HR plays a key role in enabling our people to deliver through giving them the skills, experience and capabilities to be successful in their roles.