Internal Medicine at VSA - Veterinary Specialists Aotearoa | Veterinary Specialist and Animal Referral Services in NZ with 3 specialist animal hospitals in Auckland and Christchurch

Internal Medicine at VSA

What is VSA Internal Medicine?

The role of VSA Internal Medicine is primarily in making a diagnosis in unwell animals, assessing common medical complaints such as vomiting, diarrhoea, weight loss, coughing and neurological abnormalities. We use a combination of blood testing, advanced imaging and procedures like endoscopy, bronchoscopy, rhinoscopy, CSF acquisition, joint taps and other types of tissue/fluid sampling.

A consultation with the VSA internal medicine team can complement the care from your family veterinarian as well as provide ongoing support and treatment from one of our two Auckland hospitals.

We also offer phone or zoom consults to veterinarians all over New Zealand.


Comprehensive in-house service

The VSA Internal Medicine specialists have access to the full range of services provided by the VSA Imaging, Surgery, Cardiology  and Animal Emergency teams.

We have a comprehensive in-house blood and urine testing laboratory plus we have an excellent and close relationship with our local independent diagnostic laboratory.

We also provide expertise for ongoing management of complex medical issues such as hormonal diseases (diabetes, Cushing’s disease) or immune-mediated diseases.

Specialist collaboration

Having a VSA Internal Medicine service allows better collaboration between services for those complex cases that need the input of more than one specialist and/ or more than one department.

We then select appropriate further investigation to help reach a diagnosis for the presenting problems. This might include further imaging (e.g. with ultrasound or CT), further blood tests or endoscopy and biopsies or surgery and biopsies.

We work closely with the VSA Imaging and Gribbles pathology teams to aid in making diagnoses as well as facilitating surgical interventions with our specialist surgical team.

Diagnostic and treatment services

VSA Internal Medicine provides a combination of advanced diagnostics, non-surgical treatment of diseases and management of chronic conditions of cats and dogs. These include:

  • Endoscopy- This is when a flexible camera is inserted into a patient to see inside their esophagus, stomach, trachea, lungs or colon. This is a good way to get biopsies of certain organs without having to do a surgical procedure.
  • Rhinoscopy- This uses a rigid camera to see inside a patients nose. 
  • Foreign body removal- This is when an endoscopy procedure is used to remove foreign objects from a patients esophagus or stomach. 
  • Bone marrow biopsies 
  • Joint taps
  • CSF taps- This is when spinal fluid is collected using a needle.
  • Advanced imaging- this includes in-house ultrasound, X-rays, CT, fluoroscopy and access to MRI.
  • Blood and urine testing

Disease diagnosis and management

Our internal medicine specialists are able to diagnose and manage a number of complex diseases including- 

  • Diabetes
  • Hyperthyroidism
  • Cushing’s disease
  • Immune mediated haemolytic anaemia (IMHA)
  • Pancreatitis 
  • Renal, liver and intestinal diseases
  • Cancer

VSA Cancer Care


Oncology is also offered as part of the VSA Internal Medicine service, we perform chemotherapy for dogs and cats.

We also work closely with the surgical team when managing cancers that benefit from a combination approach of surgery and chemotherapy.

To find out more about VSA Cancer Care click here:

Meet our Internal Medicine Clinicians

Dr Mike Coleman

Registered Specialist Small Animal Medicine

Dr Tommy Fluen

Registered Specialist Small Animal Medicine

Dr Wen-Jie Yang

Registered Specialist Small Animal Medicine

Dr Tamara Elsmore

Internal Medicine Resident
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