Board of Directors


Dr Geoff Hogg (Chair)

Mr David Turner

Dr Joseph Patroni

Dr Sanmarié Schlebusch

Ms Agnes Tan

Ms Tracey Farrar

Dr Geoff Hogg (Chair)

Geoff Hogg has qualifications in veterinary science, medicine and law. He is a Fellow of the Royal Australasian College of Physicians and a Fellow of the Royal College of Pathologists of Australasia.

Geoff was appointed to the Board in 2008 and elected as NATA Chair on the 18th October 2016.

He has previously chaired the NATA Board’s Audit and Risk Committee.

Geoff has worked in the veterinary field as a Field Veterinarian (Department of Agriculture, Victoria) and as a Veterinary Pathologist (Bendigo Regional Veterinary Laboratory).

He has also worked as a paediatrician and a Clinical Microbiologist (Royal Children's Hospital, Melbourne).

He was also an Analyst for Microbiological Analysis of Food and an Analyst for Microbiological Testing of water for contamination and Legionella spp.

He was a Director of the Microbiological Diagnostic Unit (MDU), Public Health Laboratory at the University of Melbourne until his retirement.

He is or has been involved with NATA as an assessor for Medical Testing, as the Authorised Representative for Medical, Veterinary and Biological laboratories, and was a member of the Forensic Science Module Working Group.

He is currently a Director of ITS Public Health R&D P/L.

Mr David Turner

David Turner holds a Bachelor of Engineering, Master of Engineering Science and Master of Business Administration.

David holds the position of Director Engineering Testing and Certification Services at the Safety in Mines Testing and Research Station (SIMTARS) responsible for the NATA accredited testing and inspection services associated with explosion protected equipment used in underground coal mines and in other gas or dust explosive environments.

Previously, David was the authorised representative and directly responsible for the operation of all Energex's NATA accredited laboratories covering electrical, temperature and humidity calibrations and measurement and for Energex's NATA inspection accreditation.

David's association with NATA goes back over 20 years through the management of accredited laboratories covering five separate fields of accreditation and inspection services, including the roles of signatory and authorised representative. He was elected to the Council in 2001 as a Members’ Representative for Queensland and continued to represent the Queensland members on Council to June 2013.

Dr Joseph Patroni

Dr Joseph Patroni received international acknowledgement in his early career as a research scientist specialising in carbohydrate chemistry with senior roles spanning some 10 years in applied research with the Sugar Research Institute Ltd (Qld), and in industrial research management with Bunge (Australia) Pty Ltd (Melb). He has authored international, peer-reviewed papers in carbohydrate and analytical chemistry, and invented low-cost surfactant technology for the commercial production of recombinant proteins from 1978-1989. This globally patented technology enabled the first industrial-scale manufacture of physiologically active proteins from engineered organisms in Australia from 1985, and underpins the manufacture of porcine growth hormone internationally.

His experience in intellectual property development and transfer has fed a passion for mediation of intellectual property disputes and supports his ongoing advisory roles in intellectual property management.

Joseph has served in management and governance roles within the economic development portfolios of Western Australia for over 20 years in public service. His efforts have supported the planning and development of economic infrastructure as well as major public/private co-investment in scientific innovation delivering new research-intensive enterprises in the medical, biotechnology, environmental, minerals processing, minerals exploration and radioastronomy fields.

Joseph joined the NATA Board in 2012 and brings over 30 years’ experience in innovation management and governance from both private and public sectors. He served as Western Australia’s State Government representative on NATA Council from 2001 until Council was discontinued in 2014.


Dr Sanmarié Schlebusch

Sanmarié Schlebusch has a number of qualifications in medicine and business. She is a Fellow of the Royal College of Pathologists of Australasia, an Associate Fellow of the College of Health Services Management, and a Graduate of the Australian Institute of Company Directors.

She is the Staff Specialist Microbiology / Clinical Microbiologist for Forensic and Scientific Services, Health Support Queensland. She is also one of the medical microbiologists at Pathology Queensland. Previously she was the Director of Microbiology of Mater Pathology, Mater Misericordiae Ltd Brisbane. Her clinical expertise further includes Water Quality Management, Public Health, and Infection Prevention and Control. She is well published and recognized for her research and expertise in innovative technologies for diagnosis of infectious diseases and antimicrobial resistance. She is currently undertaking research on the effects of antibiotics on the gut microbiome using a metagenomic approach. She further contributes to translational medicine and research as senior lecturer with the University of Queensland.

Sanmarié is a Board member and was previously the Treasurer for Women’s Health Queensland Inc. She has served in a number of management and governance roles within the health industry.

She is an experienced medical practitioner and pathologist bringing insights in contemporary diagnostics including microbial genomics. She joined the NATA Board in 2018.

Ms Agnes Tan

Agnes Tan holds a Bachelor of Food Technology and a Master of Health Administration.  She is a Fellow of the Australian Institute of Food Science and Technology (AIFST), a past Member of the Australian Society for Microbiology and a Member of the International Association for Food Protection.  She has more than 30 years food safety experience in public health, specialising in outbreak investigation and food safety risk mitigation.  Her experience includes investigation, in collaboration with health authorities, all major food poisoning outbreaks in Victoria between 1980 and 2013. She is an Approved Analyst, for the Microbiological Analysis of Food, under the Victorian Food Act (1984).

Agnes chairs the Standards Australia Committees on Food Microbiology (FT035) and Legionella Methodology (FT020-01).  She has been the Head of the Australian Delegation, representing Standards Australia on the International Standardisation Organisation (ISO) Committee (TC34/SC9) on Food Microbiology since 2007.  She is a member of the International Association for Food Protection Committee for the Control of Foodborne Illness (IAFP-CCFI) and is a contributor to the Sixth Edition of Procedures to Investigate Foodborne Illness, published by Springer.

Agnes was Senior Scientist at the MDU Public Health Laboratory, University of Melbourne, for 37 years. 

She has co-authored numerous papers on food safety, Legionnaires’ Disease and health risks in aged care.

Agnes has been an assessor with NATA since 1979.  She has been a member and chaired NATA Accreditation Advisory Committees for many years.  She is currently the Co-chair of the NATA Life Sciences Testing Accreditation Advisory Committee. 

Ms Tracey Farrar

Tracey Farrar is an experienced leader in pathology operations management, with more than 20+ years’ working within pathology for both private and public providers. Tracey has a background in Microbiology where she worked as a scientist for many years before changing to administrative management operations within pathology. Tracey has specialist knowledge in pathology quality management, risk management and business continuity, and work health and safety management.

In her current role as an Operations Manager she is known for seeing a future and building a path towards it, utilising resources wisely, being agile and decisive in decision making and builds lasting change and a culture of accountability.

Tracey has a Bachelor of Applied Science in Medical Laboratory Science, a Diploma in Risk Management and Business Continuity and a Graduate Certificate in Business Administration working towards an MBA.