Meet Our Team

Meet the staff at the Roseworthy Veterinary Hospital who will look after you and your animals.

Roseworthy Veterinary Hospital - Small Animals

  • Clinicians

    Associate Professor Anne Peaston

    BVSc, PhD, DACVIM (Oncology), FANZCVS (Oncology)
    Clinical Lead
    Associate Professor Small Animal Medicine

    Anne Peaston is an international cancer expert with experience across veterinary clinical medicine and biomedical research. Her garden at home is an abundance of Australian native plants to attract vertebrate and invertebrate wildlife, while minimising her cats' access, to their displeasure!

    Dr. Sita Withers

    BVSc(Hons), PhD, DACVIM(Onc)
    Senior Lecturer

    Dr. Sita Withers joined our Small Animal Oncology Service in March 2024. 

    After graduating with a veterinary degree from the University of Melbourne in 2008, Sita practiced in Australia for two years before moving to California to undertake a medical oncology residency at the University of California Davis (UC Davis). She became a board-certified specialist in medical oncology (DACVIM(Onc)) in August, 2014. During her residency, she developed a keen interest in cancer research and went on to pursue a PhD in Integrative Pathobiology. She then spent 5 years at Louisiana State University (LSU) as a tenure-track Assistant Professor of Medical Oncology. She has been invited to present her research and give continuing education at international conferences in both the United States and China, and is thrilled make her way back to Australia to join the faculty at The University of Adelaide. When she's not at work she enjoys hoarding plants, jogging, swimming, practicing yoga, traveling and hanging out with her two dogs and two cats.

    Dr Olaf Schaaf

    Olaf Schaaf has been a specialist small animal surgeon registered both in Australia and Europe. He completed his residency training at Murdoch University, Perth in 2009 and attained became a Diplomat of the European College of veterinary Surgeon in 2011.  He worked in private referral practise in the Perth and the Sunshine Coast, before accepting the challenge of help start up the Adelaide University Vet school in 2012. He enjoys all aspects of dog and cat surgery and accepts surgical referrals for soft tissue, orthopaedic and spinal surgery. He has a keen interest in all things orthopaedic including: fracture repairs, growth deformities, ligamentous injuries, cruciate disease, patella luxation, arthroscopy as well as oncology (cancer) surgery. When he is not helping animals getting a better quality of life in the clinic or teaching up and coming veterinarians, you'll find him spending time with his daughters; crazy Jack Russell Terrier, sweet Staffy x Dachshund or relaxing with his 2 Burmese cats.

    Dr Anthony Nicholson

    While he's now anaesthetising mice to elephants and everything in between; Anthony's interests were originally in the respiratory anatomy and physiology of marine mammals. In his spare time, he enjoys cat-herding (Gordon-Bennett, Beanie, Perch and Freddy), Pippa the dog, photography, music and cooking.

    Dr Peter Hutchison

    Peter’s interests lie in emergency medicine, small animal surgery and exotic pets. He currently spends his time with domestic short-haired cat Donut and Ixy the kelpie. His past acquaintances include Ginger the axolotl; Thomas the tortoise and Jeffery Gary Williams the giant panda snail.

    Dr Greg Riessen

    After having gained experience in both mixed and small animal practice both here and overseas in the UK for 10 years, Greg developed a keen interest in small animal emergency and critical care whilst working for the UK's largest provider of emergency care, Vets Now.  In 2014 Greg relocated back to his native hometown Adelaide with his wife and two kids before joining the team at Companion Animal Health Centre in 2018.  Greg is currently working towards gaining his memberships in Emergency and Critical Care.

    • Dr. Annie Grove - Emergency and Critical Care Practitioner
    • Dr. Brianna Lambert - Small Animal General Practitioner
    • Dr. Ellen Mcbryde - Small Animal General Practitioner
    • Dr. Grace Chapman - Small Animal General Practitioner
    • Dr. Isabella Fricke - Emergency and Critical Care Practitioner
    • Dr. Isabella Kotasek - Small Animal General Practitioner
    • Dr. Jennifer Jacobi - Emergency and Critical Care Practitioner
    • Dr. Johanna Mahadevan - Small Animal General Practitioner
    • Dr. Laura Salisbury - Emergency and Critical Care Practitioner
    • Dr. Lloyd Ings - Small Animal General Practitioner
    • Dr. Maeva Guyomar - Emergency and Critical Care Practitioner
    • Dr. Marina Munerato - Anaesthesia
    • Dr. Meagan Coolahan - Small Animal General Practitioner
    • Dr. Rachel Kelson - Small Animal General Practitioner
    • Dr. Rob Auricht - Small Animal General Practitioner
    • Dr. Sandy Harbison - Small Animal General Practitioner
    • Dr Zsofia Medgyesi - Small Animal General Practitioner
  • Nurses, Client Services & Support Staff

    Nurses                                               Client Services                                   Technicians                                                

    Nurse Team Leads:

    • Jane
    • Saskia

    Veterinary Nurses:

    • Alessia
    • Ana
    • Ashley
    • Ashlee
    • Chloe
    • Courtney
    • Erin
    • Hollie
    • James
    • Laura Jane
    • Olivia
    • Sarah
    • Shannon
    • Krystal


    • Sarah Nixon - Team Lead
    • Beck
    • Cathy 
    • Chris
    • Cindy
    • Lyn
    • Melissa
    • Jeremy
    • Meg
    • Maddie










    • Julie - Imaging
    • Jessica - Imaging
    • Clair - Central Supply










Roseworthy Veterinary Hospital - Large Animals

Casey Hogan

Casey Hogan

Hospital Manager
Advanced Diploma of Horse Husbandry & Management, Diploma of Management, Cert IV Youth Work

Being a graduate of the university in the area of horse husbandry and management I was delighted to get the opportunity to return in the role of Practice Manager in 2013.  I am passionate about the Equine Industry and professional leadership development for myself and staff. A career highlight is obtaining Hospital Accreditation for the first Large Animal Hospital in South Australia.

Previous to this role I spent 11 years working for the South Australia Police, Mounted Operations Unit where I was responsible for all facets of horse husbandry and supervised a team of stable hands.    I have a passion for horses and young people, which has lead me to my current position.  In my free time I train and compete my own horses and am always looking to further develop my knowledge and skills in the veterinary industry.

Casey Hogan

  • Clinicians

    Dr Surita du Preez

    Registered Specialist in Equine Internal Medicine

    Surita graduated from the University of Pretoria, South Africa in 2007 after which she spent 6 years in equine private practice before completing a four-year combined residency and professional doctorate in equine internal medicine, at Charles Sturt University, NSW. Her doctorate research project involved the evaluation of non-invasive diagnostic modalities to evaluate lower airway health of horses, specifically those with mild to moderate equine asthma. She attained Diplomate status of the European College of Equine Internal Medicine in 2018 and joined the team at the University of Adelaide’s Roseworthy Veterinary Hospital. Surita enjoys all aspects of equine medicine with a specific interest in non-infectious lower airway diseases including Equine Asthma, neonatal and adult critical care, ophthalmology, gastroenterology and therapeutics.

    Associate Professor Sam Franklin

    Diplomate of the American College of Veterinary Sports Medicine and Rehabilitation

    RCVS, American and Australian Recognised Specialist in Equine Sports Medicine.

    Sam is a Registered Specialist in Equine Sports Medicine and Fellow of the Royal College of Veterinary Surgeons. She has a particular clinical interest in the diagnosis and management of diseases affecting athletic performance and was responsible for the development of the 'overground endoscopy', an advanced imaging technique to diagnose upper airway collapse that occurs when a horse is exercising.

    Her clinical expertise includes exercise testing and investigation of respiratory disorders (equine asthma, exercise-induced pulmonary haemorrhage and upper airway collapse), cardiac disorders (with a focus on atrial fibrillation and other exercise-associated heart rhythm disorders) and Equine Gastric Ulceration Syndrome (stomach ulcers).

    Dr Erik Noschka

    RVH Department Head
    Equine Specialist Surgeon

    Erik's areas of special interests include general, soft tissue, upper airway, colic and minimal invasive surgery. He's been with us since 2011 and contributed to the construction and equipping of the Roseworthy Veterinary Hospital Large Animal Unit.

    Dr Olivier Simon

    European and Australian registered Specialist in Large Animal Surgery
    Senior Lecturer in Equine Surgery – Large Animal Hospital Team Lead

    With a strong and diverse clinical background in every aspect of equine surgery and lameness examination, Olivier has a special interest in laparoscopy techniques, including the development of some novel procedures; transendoscopic laser surgery; and the management of sub-chondral bone cyst-like lesions.

    Dr Gustavo Ferlini Agne

    Diplomate of the American College of Veterinary Internal Medicine – Large Animal
    Lecturer in Equine Internal Medicine 

    Gustavo is a Large Animal Internal Medicine Specialist and lecturer in Equine Internal Medicine in the School of Animal and Veterinary Science at The University of Adelaide. After graduating from the Federal University of Rio Grande do Sul (UFRGS - Brazil), Gustavo worked as an equine practitioner in south of Brazil with a focus on equine reproduction. Afterwards, Gustavo completed two equine rotating internships in California, USA and an equine medicine fellowship at Hagyard Equine Medical Institute prior to commencing a specialty training programme in Large Animal Internal Medicine at Auburn University. Gustavo also attained a Master of Science degree at Auburn University studying the pharmacokinetics and pharmacodynamics of a novel oral diuretic in horses. Following this, he attained board-certification with large animal internal medicine specialist status with the American College of Veterinary Internal Medicine and commenced his academic career at The University of Adelaide. Gustavo is currently undertaking a PhD investigating the welfare impact and aspects of non-response to therapy in horses with Equine Gastric Ulceration. Gustavo has a passion for all aspects of internal medicine, including pharmacology, gastroenterology, endocrinology, neonatology, cardiorespiratory, ophthalmology as well as treatment and management of infectious diseases.

    Dr Lidwien Verdegaal

    DVM, PhD, Dip RDVS, Dip ECEIM
    Diplomate of the European College of Equine Internal Medicine

    Dutch, European & Australian Registered Specialist in Equine Internal Medicine
    Senior Lecturer Equine Internal Medicine

    Dr Lidwien Verdegaal qualified as a Doctor of Veterinary Medicine at Utrecht University, The Netherlands, in 1996. After completing her residency, she qualified as an Equine Medicine Specialist with the Royal Dutch Association of Veterinary specialists and is a Diplomate of the European College of Equine Internal Medicine (ECEIM). She gained a wide range of clinical experience in equine medicine working at private hospitals in the Middle East: for the Jordanian Royal Family in Jordan and in Kuwait. She moved to South Australia in 2011 and is passionate for all medicine cases, in particular emergency and critical care and sport medicine. She recently completed her part-time PhD research into heat stress and thermoregulation of exercising horses, a collaboration between SAVS and Ghent University, Belgium.

    • Dr. Amie Kapusniak - Equine General Practitioner
    • Dr. Jennifer Connolly - Equine General Practitioner
    • Dr. Kara Taylor - Equine General Practitioner
    • Dr. Paul Lubbe - Equine General Practitioner/Reproduction
  • Nurses, Client Services & Support Staff

    Nurses Client Services              Technicians


    Nurse Team Leads:

    • Sharyn

    Veterinary Nurses:

    • Courtney
    • Gabriella
    • Gabrielle
    • Jaime
    • Kelly
    • Kirsty
    • Maria (Medicine)
    • Ophelia
    • Phillippa (Surgery)
    • Sharna
    • Tessa
    • Sarah Nixon - Team Lead
    • Lee
    • Lauren
    • Racheal
    • Melissa
    • Cheryl


    • Gregg
    • Alana
    • Candice
    • Stacey
    • Katie
    • Megan
    • Nina

Roseworthy Veterinary Hospital - Pathology

RVH Pathology Laboratory Manager - Tracey Murnane

Pathologists Technicians
  • Dr Sandy McLachlan - Clinical Services Lead
  • Professor Darren Trott - Supervising Microbiologist
  • A/Prof Lucy Woolford – Veterinary Pathologist
  • Dr Milton McAllister - Veterinary Pathologist
  • Dr Peter Toh - Veterinary Pathologist
  • Dr Ryan O'Handley - Parasitology
  • Dr Stephen Pyecroft - Veterinary Pathologist
  • Adrian Hines 
  • Cheryl Day 
  • Lachlan Wong
  • Natasha Baker
  • Rebecca Summerton 

Roseworthy Veterinary Hospital - Business Systems Team

Hospital Director Business Systems Team Pharmacy
Dr. Sonia Wilson
  • Judith Watters - Business Systems Manager
  • Sarah Nixon - Business Systems Supervisor
  • Jodie Vaughan - Business Systems Officer
  • Renee
  • Brandan