Our leadership team

Australian Surgical Assisting (ASA), part of 24-7Healthcare Australia’s largest network of home visiting healthcare professionals. Proudly Australian, our service has a 30 year history of providing  quality healthcare in the home, community settings or at aged care facilities.

With accredited standardsour reputation for quality care is built on the solid foundation of our Clinical governance and framework.

Our Executive Management Team works collaboratively to ensure the business provides exceptional, accessible and sustainable healthcare.

Executive management team


  • John Pappalardo

    Chief Executive Officer

    John is an experienced executive who has worked across a number of major industries including healthcare, logistics and manufacturing. He has a track record in driving increased shareholder value through business growth and profit improvement programs.

    John has spent the last 12 years in healthcare, taking particular satisfaction from the higher social responsibility that is bestowed upon healthcare organisations. He is of a clear view that quality and patient-centricity is at the heart of our business purpose.


  • Dr Umberto Russo
    MBBS, FRACGP

    Chief Medical Officer

    Dr Russo has more than two decades’ experience both in General Practice and medical deputising. He established Adelaide’s leading medical deputising service prior to merging with 13SICK, National Home Doctor Service. Dr Russo works closely with the Board overseeing clinical governance, policies and procedures.

  • David Wiggins

    Chief Financial Officer

    David Wiggins is a Chartered Accountant and experienced Chief Financial Officer and Company Secretary, having held the financial leadership roles in a number of ASX listed and private equity owned companies over the past 20 years.

Medical Director

  • Dr Joanna Tait
    MBBS

    ASA Medical Director

    Dr Joanna Tait is a member of the Australian Medical Association (AMA) and a previous Member of Council, AMAQ. Dr Tait is a Foundational Member of the Medical Surgical Assistants Society of Australia (MSASA) and a previous past president. In 2017 Dr Tait received the ‘Citation of AMAQ’ in recognition of her outstanding and invaluable service to the profession and to the community of Queensland.