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C Rajasoorya

Clinical Professor

Senior Consultant, Department of Endocrinology, Sengkang General Hospital


Education Qualifications: MBBS, MRCP (UK), MMed, FAMS (Endocrinology), FRCP (Edinburgh) FRCP (London)

Professor Rajasoorya is a Senior Consultant in Internal Medicine and Endocrinology at Sengkang General Hospital.  He has a passion for educating young doctors, undergraduates and postgraduates. He strongly believes in the need to continually acquire and transmit the art and science of clinical skills to the next generation of healthcare workers.  He has previously undertaken various leadership, administrative and advisory positions in committees related to endocrinology, medical education and curriculum development.  He was a former editor of the Singapore Medical Journal, President of the Endocrine and Metabolic Society of Singapore, Chaired the Specialist Training Committee in Endocrinology and had been an Examiner for various undergraduate and postgraduate bodies in Singapore.  

Professional Appointments and Committee Memberships:

  • Clinical Professor, Faculty of Medicine NUS
  • Clinical Professor, Duke-NUS Graduate Medical School
  • Adjunct Professor, LKC School of Medicine, NTU
  • Member Internal Medicine Residency Advisory Committee, MOH
  • Physician Faculty Member for Advanced Internal Medicine Residency Program, SingHealth,
  • Member, Medicine ACP Academic Appointments and Promotion Committee


Prof C Rajasoorya is a recipient of many teaching excellence awards including the inaugural Clinician Educator National Medical Excellence Award in 2011 and various Best Speaker Awards, NUS- YLL Deans Teaching Awards & Dean’s Honour Roll for Teaching Excellence (2022), Special Recognition awards, Medical Society Outstanding Tutor awards. In 2009 he received the Singapore Medical Association Merit Award.  In 2016 he was awarded the (National) Distinguished Senior Clinician Award. In 2006 he was awarded the Public Service Administration (Silver Award) as a recognition for merit and service to the nation.

Leadership positions / roles in Education: 

Prof Rajasoorya teaches undergraduates, postgraduates and allied health professionals and nurses.  Currently he is involved in teaching every batch of students posted to the Department of Medicine from all three medical schools.  He has also been the course instructor for the yearly Clinical Reasoning in Pharmacotherapeutics seminar/workshop organized by the SingHealth Allied Health Institute.

Research Interests:

Prof Raja’s research interest has been mainly in the clinical arena of hypothalmopituitary disorders in particular Acromegaly where he established a computerized database system for data collection on Acromegalic patients in Auckland, New Zealand and authored some landmark papers in Acromegaly in leading international journals. He has been invited both locally, regionally and internationally to give talks related to his expertise.

His current interests are in the application of clinical reasoning in medical education as well as cost-effective clinical medicine and avoidance of over-investigation in clinical medicine.

Selected Publications:

Determinants of clinical status and outcome in acromegaly.  Rajasoorya C, Holdaway IM, Wrightson P, Scott DJ and Ibbertson HK.  Clinical Endocrinology, 1994, 41: 95-102.

Factors Influencing Mortality in Acromegaly.  Holdaway IM, Rajasoorya C, Gamble G.  J Clin Endocrinol Metab 2004; 89:667-674

Epidemiology of Acromegaly” Invited Review.  Holdaway IMH and Rajasoorya C.  The Pituitary 1999;2: 29-41

Long Term Treatment Outcomes in Acromegaly.  Holdaway IM, Rajasoorya C, Gamble GD, Steward AW. GH and IGF Research 2003; 13: 185-192

A germline mutation of the TSH receptor gene associated with thyrotoxicosis and mitral valve prolapse in a Chinese family.  Khoo DHC, Parma J, Rajasoorya C, Ho SC, Vassart. J Clin Endocrinol Metab 84: 1459-1462, 1999.

Seasonal variation in the secretion of mammotrophic hormones in normal women and women with previous breast cancer.  Holdaway IM, Mason BH, Gibbs EE, Rajasoorya C, Letharby A, Hopkins KD, Evans MC, Lim T and Schooler B.  Breast Cancer Research and Treatment 1997; 42: 15-22 

Thymic carcinoid in multiple endocrine neoplasia 1: genotype-phenotype correlation and prevention.  LC Lim, MH Tan, C Eng, BT Teh, C Rajasoorya. J Intern Med 2006; .259(4): 428-432.

Metamorphosis of a non-functioning Pituitary Adenoma to Cushing's Disease” Tan EU, Ho MSJ and Rajasoorya C.    The Pituitary 2000; 3(2):117-123

Seasonal Changes in Serum Melatonin in Women with Previous Breast Cancer. Holdaway IM, Mason BH, Gibbs EE, Rajasoorya C, Hopkins KD. Br J Cancer 1991, 64:149-153.

The Elevated SAP – The chase that led to two endocrinopathies … and one diagnosis. Hsu LF and C Rajasoorya. European Journal of Endocrinology 1999; 140: 143-7

“X-Ray Diagnosis – A Physician’s approach" Sep. 1997; Springer-Verlag Publishers by KN Sin Fai Lam,C Rajasoorya, Abisheganaden and LS Chew 

Editor(co) – Modified Essay Questions for Medicine Finals Volume 3. World Scientific Publishers 2021 ISBN 978-981-123-009-7

Outcomes and Standards for Undergraduate Medical Education in Singapore – report of the recommendations of the National Medical Undergraduate Curriculum Committee (NMUCC) Report. 2014.

Editorial: Credat Emptor – The Sacrosanct Doctor-Patient Relationship.  Ann Acad Med 2018; 47(8): 275-277

Medical Education and Professional Training – Changing the Trajectory.  Ann Acad of Med 2013 Feb Vol 42 No 2

Commentary.  Clinical Ward Rounds – Challenges and Opportunities. C.Rajasoorya Ann Acad Med 2016; 45: 152-6

Commentary. Primetime to resuscitate clinical Medicine and kill diagnostic greed?  C Rajasoorya Singapore Med J 2016; 57(9): 473-475

Personal View.  If I had to do it all over again – Reflections of a clinician-educator. C Rajasoorya.  The Asia Pacific Scholar.  Vol 5(1).  January 2020.