Tonic Media Network Board of Directors

The Tonic Media Network Board brings unparalleled experience in the public and private health sectors,
media, general practice, medical research, finance and industry.

Paul Robertson AO

Paul Robertson AO

Chairman

Paul Robertson is currently the Chair of Tonic Media Network, and Chair of St Vincent’s Health Australia.
Dr Matthew Cullen

Dr Matthew Cullen

Managing Director, CEO

Dr Cullen is one of Asia Pacific’s leading health technology experts and joined Tonic Media Network as Managing Director in 2014. Dr Matthew Cullen also serves, by ministerial appointment, as a member of the Aged Care Quality Advisory Council, and consults as a psychiatrist to St Vincent’s Hospital, Sydney.

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Dr Norman Swan

Dr Norman Swan

Executive Director

Tonic Media Network’s Executive Director and co-founder, Dr Norman Swan, is Australia’s most respected health journalist and broadcaster.

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Dr John Aloizos AM

Dr John Aloizos AM

Non- Executive Director

John has been a GP for over 43 years and has energetically participated in many high-level national health policy areas including; digital health, standards and accreditation, primary healthcare and national medicines policy. John’s other current directorships include Chairman of Garden City Medical Services, Inala Primary Care and Cubiko.  He was previously Senior Clinical Reference Lead at the Australian Digital Health Agency.

Peter Joseph AM

Peter Joseph AM

Non-Executive Director

Board Member Peter Joseph, also holds positions as Chairman, Black Dog Institute, Chairman, St James Ethics Centre, Chairman, The Health-Science Alliance, UNSW Campus.
Richard Silverton

Richard Silverton

Non-Executive Director

Richard Silverton has more than 20 years of global experience in the media and telecommunications industries

Tonic Media Network Management Team

Dr Matthew Cullen

Dr Matthew Cullen

Managing Director, CEO

Dr Cullen drives Tonic’s strategic direction and initiatives to ensure we continue to meet the needs of healthcare professionals, our partners and the broader Australian community, in the evolving healthcare environment.

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Katherine Dziaman

Katherine Dziaman

Chief Financial Officer

Katherine’s role involves further scaling-up the business, delivery of consistent growth and maximising shareholder value.

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Sev Celik

Sev Celik

Commercial Director

Sev is a very experienced Commercial Director and a leader with a proven track record of outstanding commercial success.

Tim van Brugge

Tim van Brugge

Head of Digital

Tim and his team are responsible for Tonic’s digital strategy and ensuring our digital network including myDr.com.au continues to meet both our audiences’ and advertiser’s needs. They also manage content and strategic partnerships.