At IDEXX, our team is one of our greatest strengths. With access to a diverse range of pathologists, internal medical consultants and medical affairs veterinarians IDEXX ensures you are supported with the very best expertise and professional knowledge.

Dr Philippa McLaren

BVMS (Hons), MVS, MANZCVS,  DACVP (Clin Path)

Specialist Veterinary Pathologist – Clinical Pathology
Philippa is the Pathology Services Manager at IDEXX Australia, responsible for overseeing the team of pathologists while working predominantly in clinical pathology in our Melbourne laboratory.
After placing first in class in her veterinary degree in Glasgow and following two years in practice in England and Western Australia, Philippa trained initially in anatomic pathology with a masters in pathology from the University of Melbourne before transitioning gradually to clinical pathology, and in 2014 she achieved her ACVP specialist qualification in clinical pathology. She is comfortable providing advice across all fields of pathology, though her particular strengths lie in small animals and exotics. Her interests include liver and spleen cytopathology and haematopathology, and she also has a strong interest in biochemical and endocrine testing and interpretation. She’s published on a syndrome of chondrodysplastic calves during the last Victorian drought, among others. Her particular passion is teaching and sharing knowledge; she is proud to have introduced “consensus rounds” as a regular feature of the IDEXX team’s week for case progression, knowledge sharing and training, and will be supervising a pathology resident over the next four years. She regularly provides biochemistry and haematology rounds for Australian and New Zealand pathology trainees in many institutions.
Philippa has three children who share her passion for animals, and the family enjoys ocean sports and plenty of beach walks. 

Dr Catherine Benson


Specialist Veterinary Pathologist – Anatomic and Clinical Pathology

Originally from Chicago, Catherine is a 2003 graduate of Furman University. She graduated with a Bachelor of Science (Hons) with majors in Biology and French.  During her period of undergraduate study, Catherine also completed her accreditation as a student-teacher enabling her to teach high school biology.

In 2007, Catherine completed her Doctorate of Veterinary Medicine with Honours from the University of Illinois and went on to complete a residency in anatomic pathology at Cornell University. Upon completion of her residency in 2010 she was named a Diplomat of the American College of Veterinary Pathologists. 

Following this recognition, Catherine secured a residency in the clinical pathology training program at the University of Minnesota and in 2015 became a board certified pathologist in both clinical and anatomic pathology.

Catherine joined IDEXX in 2015 after working for a private diagnostic laboratory in Seattle, Washington and currently holds a position as a reviewer for the Journal of the American Veterinary Medical Association. She has co-authored a chapter in Smith’s Large Animal Internal Medicine textbook and has published case reports in a variety of veterinary journals.

Catherine’s areas of interest in both clinical and anatomic pathology include: oncopathology and renal and liver diseases.

Dr Mark Carrigan


Specialist Veterinary Pathologist – Anatomic Pathology

Mark Carrigan graduated from the University of Sydney in 1974 with a Bachelor of Veterinary Science (Honours). He worked as a clinical instructor for three years, followed by two years in mixed and small animal practice in England.

Mark developed an interest in pathology which saw him return to Australia to work at the NSW government's veterinary laboratory in Orange. During his 13-year employment (1981-1994) with the laboratory, he spent two years (1992-1994) as a staff pathologist at the University of California, USA.

Mark’s specialty lies in surgical pathology and the pathology of infectious diseases. He has authored over 25 scientific publications as part of his work, including one which appeared in Veterinary Pathology Online.

His other qualifications and memberships include a Diplomate of the American College of Veterinary Pathologists, membership of Australian and New Zealand College of Veterinary Scientists (MANZCVS), member of SCAHLS (sub-committee on animal health laboratory standards) and registered with the Veterinary Surgeons Board of Queensland.

Mark joined IDEXX Laboratories in 1995 and is a Registered Specialist Veterinary Pathologist.

Dr William Gow


Specialist Veterinary Pathologist - Clinical Pathology

William graduated from Murdoch University with a Bachelor of Science, and a Bachelor of Veterinary Medicine and Surgery in 2009. Following on, he went on to work in a small animal general practice in Perth, WA, for two-years.  

William commenced his residency in Veterinary Clinical Pathology in 2012 at the Ontario Veterinary College, University of Guelph in Canada. During which he completed a research project and written thesis investigating circulating microRNA profiles in dogs with multicentric lymphoma. In 2015, William joined IDEXX as a Clinical Pathologist after completing his residency. In 2018, William achieved his board certification for Clinical Pathology with the American College of Veterinary Pathologists (ACVP).

William’s areas of professional interest include; cytopathology, haematopathology and bone marrow pathology, including haematopoietic neoplasms. He also enjoys helping clients with complicated cases.

In his spare time away from work, William enjoys watching sports and is an avid supporter of Chelsea Football Club in the English Premier League.

Professional memberships include; American College of Veterinary Pathologists (ACVP), American Society for Veterinary Clinical Pathology, Australian Veterinary Association, and Australian Society for Veterinary Pathology.

Dr Iona Maher


Specialist Veterinary Pathologist – Clinical Pathology

A graduate of the University of Sydney, Iona has a Bachelor of Science (Botany & Zoology), an Honours degree in Fire Ecology, and a Bachelor of Veterinary Science. Following graduation, she worked as a veterinarian at both a mixed and a small animal practice in NSW for four years.

In 2006, Iona accepted a residency position at the University of Bristol. After her tenure, she joined TDDS, a diagnostic service in Devon UK as a veterinary clinical pathologist.

Iona’s work has been published in The Veterinary Record and Journal of Feline Medicine and Surgery. She’s also an invited speaker at international veterinary pathology conferences.

Iona is a Diplomate of the European College of Veterinary Clinical Pathology. She is also a member of the Wildlife Disease Association whose focus is improving health management of wildlife.

Currently, Iona is studying for a PhD at the University of Sydney. She is researching koala immunology, including the effects of retrovirus on the koala immune system.

Dr Helen Peam


Specialist Veterinary Pathologist – Anatomic Pathology

Helen has had a passion for animal health since an early age, and first started talking about becoming a vet at age 4. Helen completed a Bachelor of Applied Science in Equine Studies at Charles Sturt University, Wagga Wagga in 2003. After working with horses for a short while she went on to study Veterinary Science at the University of Sydney, completing her degree in 2009. After graduation, Helen practised as a veterinarian in a mixed rural practice in Moree, in north western NSW.

In 2012, Helen accepted a Veterinary Pathology Trainee appointment at the NSW Department of Primary Industries. Helen gained membership to the Australian and New Zealand College of Veterinary Scientists (MANZCVS) in Pathology in 2014. During her time at the DPI, she worked closely with pathologists from The University of Sydney, and Taronga Zoo, as well as running several pathology training workshops for government and private vets.

Helen’s areas of professional interest include; diagnostic investigation of disease of livestock and wildlife, infectious, emerging diseases and zoonotic disease.

Professional memberships include; Australian and New Zealand College of Veterinary Scientists (MANZCVS) in Pathology, Australian Veterinary Association, and Australian Society for Veterinary Pathology.

Dr Jeff Curtiss

DVM, MVSc, Diplomate ACVP

Specialist Veterinary Pathologist – Specialist Anatomical Pathologist 

Jeff is a boarded anatomic pathologist (ACVP) with special training in zoo, wildlife and exotic animal pathology. He recently completed the zoological pathology program residency at the University of Illinois in Chicago and is excited to be joining the diagnostic team at IDEXX Australia. When he’s not behind the microscope, he enjoys running with his dogs, rock climbing, and heading down to the Gold Coast for some surf.

Jeff began his interest in pathology at a young age while working as a summer volunteer at the Marine Mammal Pathobiology Laboratory with the FFWCC in St. Petersburg, Florida. From there he pursued a bachelor’s degree in wildlife ecology and conservation and then a doctorate in veterinary medicine in 2015 both at the University of Florida. He began his professional career as a wildlife veterinarian at the Emerald Coast Wildlife Refuge and Zoo. In treating various free-ranging and zoo-owned animals as a veterinarian, his continued investigation of diseases further solidified his interest in pathology. In 2016, he started an anatomic pathology residency at the Zoological Pathology Program at the University of Illinois in Urbana and Chicago, seeing various cases from institutions such as the Brookfield Zoo, Shedd Aquarium, Lincoln Park Zoo, and Forest Preserve District of Cook County, as well as routine domestic animal material. During the residency, he studied Brucella ceti in cetaceans while pursuing his master's degree in veterinary clinical medicine. Jeff looks forward to improving diagnostics and characterisation of important diseases affecting all animals.

Dr Patrick Shearer


Specialist Veterinary Pathologist – Anatomic Pathology

Patrick is a Specialist Veterinary Anatomic Pathologist and musician, recently relocated to Melbourne and enjoying the city immensely.

Patrick’s pathology experience spans government, academic, and commercial roles, and includes expertise in production and companion animals, fish, avian and exotics (and even an occasional gorilla). His veterinary degree, emergency medicine internship, and PhD (on diagnostic tests for psittacine beak and feather disease virus) were undertaken at Murdoch University, and this formed the beginnings of his pathology journey. After his PhD, Patrick took on an epidemiology role with the US’ largest private practice veterinary company, followed by roles in scientific writing/editing and biotechnology. Patrick undertook formal pathology training with the NSW DPI, and achieved membership with the Australian and New Zealand College of Veterinary Scientists in Pathology in 2016, followed by Diplomate status with the American College of Veterinary Pathologists in 2018. Patrick is dedicated to supporting other members of the pathology community, having served as a committee member with the Australian Society for Veterinary Pathologists (2017-2018), is currently ASVP vice-president and will lead the Victorian committee in 2021-2022.

In his spare time, Patrick enjoys photography, surfing, kayaking, live music, and hiking, or sometimes just curling up on the couch with his cat, Cleo.

Dr Mandy O'Hara

BSc (Hons) BVMS (Hons) MANZCVS DACVP (Anat Path)

Specialist Veterinary Pathologist – Anatomic Pathology

Mandy is a specialist anatomic pathologist with more than 20 years’ experience at Murdoch University performing diagnostic pathology and research, as well as teaching and mentoring graduate students. She is predominantly focused on dermatology but contributes to a range of histopathology cases, and appreciates the submission of photos and full histories to enable her to provide detailed and comprehensive reports. Clients are welcome to request Mandy specifically for dermatology cases.  

Mandy has a range of publications and expertise across a wide range of subjects. She will be able to collaborate remotely with our team through the use of digital histopathology; look-out for photos on our reports on VetConnect Plus.

Dr Susan Piripi


Specialist Veterinary Pathologist – Anatomic Pathology

Susan graduated from Massey University, New Zealand with a Bachelor in Veterinary Science in 2003. She continued on to postgraduate study in veterinary pathology for which she was awarded a PhD in 2008.

Susan moved to the USA to complete a three year residency at the Oregon State University in the anatomic pathology department. During her time there, she co-authored and published scientific publications in the Journal of Veterinary Diagnostic Investigation. Susan was awarded the status of Diplomate of American College of Veterinary Pathologists in 2011 after successfully passing the board examinations.

She has worked as Head of Pathology for the University of Sydney’s Veterinary Teaching Hospital’s pathology unit in Camden. She is one of their senior veterinary lecturers for the Pathology department. In 2013, Susan helped facilitate the inaugural K9 Tactical Casualty Care Course at Camden hospital. The course focused on helping dog handlers and defence force officers learn life-saving emergency veterinary skills.

Susan is experienced in all aspects of veterinary pathology. She is passionate about providing excellent diagnostic service and enjoys working closely with other veterinary professionals in diagnosing and managing cases. Susan has a keen interest in pathology for production and companion animals, camelid pathology and has recently completed research for characterising chondrodysplasia in Texel sheep.

Dr Daren Hanshaw


Specialist Veterinary Pathologist – Specialist Anatomic Pathologist

Daren completed a Bachelor of Veterinary Medicine & Surgery degree at Murdoch University, Perth, graduating with merit honours. He is an experienced small animal clinician, having owned his own practice for several years, so he has first-hand knowledge of the demands of veterinary life.  In 2005, Daren commenced a pathology residency at the University of Florida. He then joined an in-house resident training program at Finn Pathologists in Norfolk, UK. During which time he gained in-depth experience in histopathology and cytology, working alongside a team of 12 other pathologists.

In 2009, he returned to his hometown of Adelaide, achieving board certification with the American College of Veterinary Pathologists (ACVP). Daren is a registered specialist in veterinary anatomic pathology and his most recent commercial pathology role, he has been mixing small animal pathology with duties in government and farm animal pathology testing, zoo animals and wildlife.  His special interests include dermatopathology, lymphoid neoplasia and cytology. Daren enjoys discussing complicated and unusual cases with his veterinary clients, always applying a clinical perspective. In his spare time, he enjoys family life, including two demanding cats, and tinkering with electronic music production.

Dr. Briony Gardiner | Specialist Veterinary Pathologist – Anatomic Pathology

Dr Briony Gardiner


Veterinary Pathologist – Anatomic Pathology

Briony is a veterinary pathologist based in our Brisbane laboratory.  A Brisbane local, Briony graduated from the University of Queensland with Honours in the year 2000. 

Following graduation, Briony worked in a number of small animal practices both in Australia and England.  After some time, her interest in scientific research resulted in a change of direction working in the field of neuroscience at the Queensland Brain Institute.  However, the call of veterinary science resulted in a return to the University of Queensland, where she accepted a pathology training position.  During this time, she achieved membership of the Australian and New Zealand College of Veterinary Scientists and a Graduate Certificate in Veterinary Studies in the field of Veterinary Diagnostic Pathology.

At the completion of her training, Briony began working as a diagnostic pathologist for Biosecurity Queensland within the Animal Disease Surveillance Laboratory at Toowoomba.

Briony joined the team at IDEXX in 2019 following a return to her hometown.  She has a professional interest in anatomic pathology of companion and production animal species.  Away from the laboratory, Briony enjoys spending time with her family, relaxing at the beach and watching movies.

Dr Kathy Luk


Veterinary Pathologist – Anatomic Pathology

Dr Richard Miller


Specialist Veterinary Pathologist – Anatomic Pathology

A 1973 graduate of the University of Queensland, Richard worked as a vet in mixed practice for two years and then studied for a Master's in Science and PhD at James Cook University. His areas of research included; bovine reproductive pathology, equine dermatoses and tropical fungal diseases respectively. From 1981 to 1985 he lectured on veterinary pathology at Louisiana State University.

Richard returned to Australia in 1985 and started Veterinary Pathology Services (VPS) in Brisbane (now IDEXX Laboratories) which focused solely on diagnostic pathology. Richard helped to set and raise the benchmark for veterinary practices that focused on pathology services. He is viewed as one of the innovators in the field of veterinary pathology in Australia and has also worked in IDEXX’s laboratory in Wetherby, UK.

Richard is a member of the Australian College of Veterinary Scientists, a diplomat of the American College of Veterinary Pathologists and has authored over 40 scientific publications. He has acted as President of the Australian Society for Veterinary Pathology and member of NATA Advisory Committee for Veterinary Testing in the past.

Accolades and awards are given for Richard’s exemplary work in the field of pathology include; the Australian College of Veterinary Science (ACVSc) College Prize in 1991 and Australian Veterinary Association (AVA) Meritorious Service Award in 1995. The ACVSc College Prize recognises the outstanding practical contribution to veterinary science or practice in Australia or New Zealand. The AVA Meritorious Service Award recognises special or long-term service to the Association.

Richard’s current areas of interest include fungal diseases, dermatopathology, avian diseases and surgical biopsies.

Dr Susan Brown

BVSc (hons), MVSt
Veterinary Pathologist – Anatomic Pathologist

Susan has experience as a clinical vet in practices in Queensland and in the UK. She has recently completed a residency at Massey University and has the first component of her ACVP accreditation. She is in the process of undertaking her second stage of this specialist qualification and will be part time and casual to allow her to share her focus with ongoing further studies.

Dr Sky Brunker


Veterinary Pathology Resident - Clinical Pathology

Sky is the newest member of the team and started her residency in clinical pathology in 2021.

One of her main motivators in entering the veterinary profession was the idea of ONE health, with a focus on production animals in developing countries. She completed a Bachelor of Veterinary Science at James Cook University, and after graduating in 2017 started in general practice at a mixed animal clinic in Hervey Bay, Queensland. Her passion for clinical pathology continued through her years in practice, attending several clinical pathology focused CPD events. She was successful in the recruitment to the first Clinical Pathology residency offered at IDEXX Australia under the primary mentorship of Dr Philippa McLaren and Dr Patrick Shearer, and will be undertaking formal and informal training along the journey to becoming a specialist in clinical pathology. Any reports you receive from Sky will be reviewed by another pathologist before release during much of her training period.

Sky is an avid coffee lover and in her spare time loves to paint, create and spend time with family. She also has 2 beautiful cats, Neo and Chief.

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