Duncan J. Topliss

Endocrinologist

Male📍 Melbourne

About of Duncan J. Topliss

Duncan J. Topliss is an endocrinologist based in Commercial Road, Melbourne (VIC 3004). He looks after people with hormone-related health issues, where things like thyroid function, blood sugar, and salt balance can make a big difference to day-to-day life.


Endocrine problems can be tricky. Symptoms can build slowly, or they can feel sudden and scary. Duncan helps patients make sense of what’s going on and works through the next steps in a calm, practical way. For some people that means adjusting treatment and monitoring over time. For others, it can involve more targeted care for specific conditions.


His work includes looking after people with thyroid conditions such as Graves disease, Hashimoto thyroiditis, hyperthyroidism, and hypothyroidism. He also supports patients who have thyroid eye disease, where eye symptoms can come with changes to the thyroid. In some cases, thyroid surgery is part of the story, including thyroidectomy, and he helps coordinate care around that.


Duncan also cares for people with other endocrine and hormone-related conditions. This includes insulinoma, where blood sugar can swing in unwanted ways, and syndromes that affect salt levels, such as low sodium level and SIADH. He can also be involved in managing more complex diagnoses like multiple endocrine neoplasia type 2 and medullary thyroid carcinoma.


Sometimes hormone problems connect with broader health concerns, and that’s where good assessment matters. For example, diabetic ketoacidosis is a serious complication of diabetes that needs quick, steady management. At times, he also supports care when there are related heart muscle concerns such as myocarditis, depending on the case and how different issues link together.


Over time, care in endocrinology often comes down to the basics: getting the right tests, understanding results clearly, and keeping treatment on track. Duncan’s approach is steady. He aims to help patients feel less overwhelmed and more informed, so decisions feel more manageable.


He stays focused on good clinical practice and ongoing learning, including how new research can shape care when it’s relevant. He also takes note of clinical trials when patients may benefit from options that are being studied, especially in situations where standard care isn’t enough.


If you’re in Melbourne and you’re dealing with hormone-related symptoms, Duncan J. Topliss can help sort through the likely causes and guide the next steps, one piece at a time.

Services & Conditions Treated

InsulinomaThyroid CancerThyroidectomyDiabetic KetoacidosisGraves DiseaseHashimoto ThyroiditisHyperthyroidismHypothyroidismLow Sodium LevelMedullary Thyroid CarcinomaMultiple Endocrine Neoplasia Type 2MyocarditisOsteomalaciaSyndrome of Inappropriate Antidiuretic Hormone Secretion (SIADH)Thyroid Eye Disease

Publications

1 total

Thyroid-Stimulating Hormone Levels and Depression in Older Adults: Cross-Sectional and Longitudinal Analyses in a Community-Dwelling Population.

The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry • January 19, 2025

Clinical Trials

1 total

A Multicenter, Randomized, Open-label, Phase 3 Trial Comparing Selpercatinib to Physicians Choice of Cabozantinib or Vandetanib in Patients With Progressive, Advanced, Kinase Inhibitor NaĂŻve, RET-Mutant Medullary Thyroid Cancer (LIBRETTO-531)

Active_not_recruitingPhase 3

Frequently Asked Questions

What services does Dr Duncan J. Topliss offer?
Dr Topliss specialises in endocrinology and treats conditions such as insulinoma, thyroid cancer, thyroid disorders (including Graves disease and Hashimoto thyroiditis), diabetes management, thyroidectomy, and related hormone issues.
Which conditions can Dr Topliss help with?
He can help with thyroid problems like hyperthyroidism, hypothyroidism, thyroid eye disease, and thyroid cancer, as well as conditions such as diabetic ketoacidosis, SIADH, myocardia issues, osteomalacia, and multiple endocrine neoplasia types 2.
Where is Dr Topliss based?
He practices in Melbourne, at Commercial Road, VIC 3004.
How do I book an appointment with Dr Topliss?
Appointments are arranged through his practice in Melbourne. Please contact the clinic to book.
Does Dr Topliss treat thyroid cancer and perform thyroid surgery?
Yes. He is listed with services including thyroid cancer and thyroidectomy, indicating involvement in thyroid-related care and surgery.
What should I bring to my first consultation with Dr Topliss?
Bring any relevant medical records, test results, and a list of current medications to help discuss your endocrine health.