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Dr Troy Puar Hai Kiat

Dr Puar Troy Hai Kiat

MBBS (Singapore), MRCP (UK)

Senior Consultant

Changi General Hospital

Specialty: Endocrinology

Sub-specialties: Hypertension, Pituitary & Adrenal Disorders, General Endocrinology

Conditions Treated by this Doctor:
Adrenal disorders, Resistant Hypertension.

Clinical Appointments

  • Senior Consultant Endocrinology Changi General HospitalChangi General Hospital


Dr Troy Puar is a Senior Consultant endocrinologist at Changi General Hospital (CGH). Dr Puar received his medical degree from the National University Singapore School of Medicine in 2005, and completed his specialist training with the Department of Endocrinology at CGH.

Dr Puar received the HMDP award in 2014 before completing a year-long fellowship at Radboud University Medical Centre, Nijmegen, the Netherlands. He has an interest in looking after patients with adrenal and resistant hypertension. He runs an Adrenal Subspecialty Clinic, and has also initiated a Resistant Hypertension Clinic in CGH.


  • MBBS (Singapore)
  • MRCP (UK)
  • Specialist Accreditation in Endocrinology (Singapore)

Professional Appointments and Committee Memberships

  • Clinical Assistant Professor - Duke-NUS
  • Member - EMSS


  • Health Manpower Development Programme 2014. Radboud Adrenal Centre, Radboud University Medical Centre, Nijmegen, The Netherlands
  • MOH Healthcare Research Scholarship – Master of Clinical Investigation (MCI) Program. 2016

Research Interests

  • Adrenal Endocrinology
  • Secondary Hypertension
  • Functional Imaging
  • Mass spectrometry


TH Puar, JJ Khoo, KS Ng, JW Kam, KW Wang. Correspondence on Adrenal Vein sampling versus CT scan to determine treatment in primary aldosteronism (SPARTACUS study). The Lancet Diabetes & Endocrinology 2016 Nov; 4(11):885-886

TH Puar, M Engels, A Herwaarden, F Sweep, C Hulsbergen, K Kamphuis, V Chortis, W Arlt, N Stikkelbroeck, H Claahsen-van der Grinten, A Hermus. Bilateral testicular tumors resulting in recurrent Cushing’s syndrome after bilateral adrenalectomy. J Clin Endocrinol Metab 2017 Feb 1;102(2):339-344

• Perez-Rivas LG, Theodoropoulou M, Troy Puar, Fazel J, Stieg MR, Gerrau F, et al. Somatic USP8 mutations are frequent events in corticotroph tumor progression causing Nelson’s tumor. Eur J Endocrinol 2017 Oct

TH Puar, A Berkel, M Gotthardt, B Havekes, A Hermus, J Lenders, W Lichtenbelt, Y Xu, B Brans, H Timmers Genotype-dependent Brown Adipose Tissue Activation in Patients with Pheochromocytoma and Paraganglioma. J Clin Endocrinol Metab. 2016 Jan;101(1):224-32.

TH Puar, Mok Y, Debajyoti R, Khoo J, How CH, Ng AK Secondary Secondary Hypertension in adults, CME Article. Singapore Med J 2016 May; 57(5):228-232

• Chandran M, Tay D, Tan M, Hao Y, Huang XF, Khoo J, TH Puar. Axial BMD in Diabetics and Non-Diabetics with Hip fractures. Do Race and Body Mass Index Matter? A Study in South-East Asians. Endocrine Practice 2016 Jun;22(6):716-25 • TH Puar, N Stikkelbroeck, L Smans, P Zelissen, Ad Hermus Adrenal Crisis: still a deadly event in the 21st Century. Am J Med. 2016 Mar; 129(3):339.e1-9.

• Quah CH, Ng JM, TH Puar. Does Occupational Driving Increase the Risk of Cardiovascular Disease in People with Diabetes? Diabetes Res Clin Pract 99: e9-e11, Jan 2013

TH Puar, Khoo JJ, Cho LW, Xu Y, Chen YT, Chuo AM, Poh CB, B Ng Association between glycemic control and hip fracture. J Am Geriatr Soc 60:1493-1497, Aug 2012

Research Trials

• Principal Investigator. Identifying Curable Unilateral Disease using 11C-MEtomidate PET-CT in Primary Aldosteronism (CURE_PA)

• Principal Investigator. CGH Research Grant. Prospective Study Assessing Blood Pressure, Cardiovascular and Other Outcomes Post-Surgical and Medical Treatment in Patients with Primary Aldosteronism (PACES _PA)