Dr Kasi Subbiah
Consultant Endocrinologist
MBBS · MRCP (UK) · FRCP​
Dr Kasi Subbiah is a Consultant Endocrinologist offering private endocrinology appointments for adults at Dundonald Consulting Rooms in East Belfast.
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His practice covers a wide range of hormonal and metabolic conditions, including thyroid disease, pituitary and adrenal disorders, osteoporosis, metabolic bone disease, diabetes and women’s and men’s hormonal health.
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Initial consultation: £200
Follow-up consultation: £170
Adults aged 18+ · No GP referral required.
About Dr Kasi Subbiah
Dr Kasi Subbiah is a Consultant in Endocrinology, Diabetes and General Internal Medicine. He currently holds an NHS consultant position at the Royal Victoria Hospital within Belfast Health and Social Care Trust.
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He provides specialist assessment for patients with both common and complex endocrine conditions. His approach is patient-centred and evidence-based, with a focus on understanding each patient’s concerns, explaining his findings clearly and developing an appropriate plan for further investigation or treatment.
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Dr Subbiah holds the Specialty Certificate in Endocrinology and Diabetes and completed specialist training in both Diabetes and Endocrinology and General Internal Medicine. His experience includes tertiary specialist training at King’s College Hospital in London, as well as consultant appointments within Northumbria Healthcare NHS Foundation Trust and Maidstone and Tunbridge Wells NHS Trust.
Conditions treated and areas of expertise
Thyroid conditions
Underactive thyroid and Hashimoto’s disease​
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Overactive thyroid and Graves’ disease​
Thyroiditis​
Thyroid nodules​
and goitre
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Thyroid conditions during pregnancy​
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Suitable thyroid cancer follow-up
Pituitary and adrenal conditions
Pituitary gland disorders
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Adrenal gland disorders
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Abnormal pituitary or adrenal hormone results
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Neuroendocrine conditions
Bone and hormonal health
Osteoporosis and metabolic bone disease
Calcium and parathyroid disorders
Vitamin D and phosphate abnormalities
Polycystic ovary syndrome, or PCOS
Menstrual and reproductive hormone concerns
Hypogonadism and low testosterone
Diabetes and metabolic health
Complex type 1 and type 2 diabetes
Insulin-pump therapy
Hybrid closed-loop systems
Continuous glucose monitoring
Weight and metabolic health
Lipid disorders
Reasons you
may see an endocrinologist
You may choose to see Dr Subbiah following an abnormal blood-test result, an existing diagnosis or symptoms that could be related to a hormonal condition. Self-paying patients can book directly without a GP referral.​
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Reasons for arranging an appointment may include:
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Abnormal or difficult-to-interpret thyroid results
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A known or suspected thyroid condition
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A thyroid swelling, nodule or goitre
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Unexplained calcium or parathyroid results
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Concerns about pituitary or adrenal function
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Osteoporosis or metabolic bone disease
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Menstrual, reproductive or testosterone concerns
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Difficult-to-manage diabetes
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Review of a diagnosed endocrine condition
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A second opinion on a diagnosis or treatment plan
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Hormonal symptoms can have several possible causes. Dr Subbiah will consider your symptoms alongside your medical history, medication and investigation results.
What to expect at your appointment
During your first consultation, Dr Subbiah will discuss your symptoms, medical history, current medication and any previous diagnoses or treatment.
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He will review relevant blood-test results, scans and medical correspondence where these are available. He will then explain his initial findings and recommend an appropriate next step. This could include further investigations, treatment, monitoring or referral to another specialist where necessary.
If possible, please bring:
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A list of your current medication
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Copies of relevant blood-test results
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Previous scan or investigation reports
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Letters from your GP or other specialists
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Details of when your symptoms began
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Any questions you would like to discuss
Qualifications, training & professional memberships
Dr Subbiah’s qualifications include
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Fellow of the Royal College of Physicians – FRCP
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Certificate of Completion of Training in Diabetes and Endocrinology and General Internal Medicine
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Specialty Certificate in Endocrinology and Diabetes
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Member of the Royal College of Physicians – MRCP (UK)
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Bachelor of Medicine and Bachelor of Surgery – MBBS​
He completed his specialist training across several NHS hospitals, including King’s College Hospital in London, where he gained tertiary-level experience in adrenal, pituitary, thyroid, lipid, obesity, osteoporosis and complex diabetes services.
Dr Subbiah is a member of
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Royal College of Physicians
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Society for Endocrinology
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Endocrine Society
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European Society of Endocrinology
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Association of British Clinical Diabetologists
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Diabetes UK
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Young Diabetologists and Endocrinologists Forum
