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Caroline Ong Choo Phaik

Adj Assoc Prof Ong Choo Phaik Caroline

MBBS, FRCS (Edinburgh), FRCS (Glasgow), FAMS (Paed Surgery), MSurgicalEd (Melbourne)

Senior Consultant

Specialty: Paediatric Surgery

Sub-specialties: Paediatric Urology

Conditions Treated by this Doctor:
Anorectal Malformation, Appendicitis, Congenital Cystic Lung Disease, Disorders of Sex Differentiation, Duplex Kidney, Emphyema, Esophageal Atresia and Tracheoesophageal Fistula, Faecal Incontinence, Fundoplication and Gastrostomy, Gallstones, Gallstones & Laparoscopic Cholecystectomy, Hernia, Hirchsprung’s Disease, Hydronephrosis, Hypersplenism, Hypospadias, Intestinal Obstruction, NEC, Neurogenic Bladder, Perianal Abscess, Testicular Tumour, Torsion Ovary, Undescended Testis, Vesicoureteric Reflux.

Clinical Appointments

  • Senior Consultant Children's Surgery Centre KK Women's and Children's HospitalKK Women's and Children's Hospital
  • Visiting Consultant Neonatal and Developmental Medicine Singapore General HospitalSingapore General Hospital

Academic Appointments

  • Education (Postgraduate) SingHealth Duke-NUS Surgery Academic Clinical Programme


Dr Caroline Ong is a general paediatric surgeon with special interest in Paediatric Urology. After graduating from National University of Singapore, she completed Paediatric Surgery training in Singapore followed by subspecialty training in Paediatric Urology at the Royal Children's Hospital in Melbourne. Her special interests in Paediatric Urology are congenital abnormalities of the urinary system (CAKUT) and neurogenic bladder.

Her other area of interest is medical education where she holds several educational leadership positions in postgraduate surgical training at institutional and national level. Her education interests are in surgical skills training and faculty development.


  • MSurgical Ed, University of Melbourne/ Royal Australian College of Surgeons 2015
  • FAMS (Paed Surgery) 2003
  • FRCS (Glasg) 1998
  • FRCSEd 1998
  • MBBS National University of Singapore 1993

Professional Appointments and Committee Memberships

  • Adjunct Associate Professor, Duke-NUS Medical School
  • Associate Program Director, SingHealth General Surgery Residency Program, 2009 - present
  • Member, Specialist Training Committee, Paediatric Surgery, Ministry of Health, 2009 - present
  • Co-chairman, Hospital Medical Procedures Accreditation Committee, 2011 - present
  • Member, Hospital Infection Control Committee, 2004 - present
  • Clinical Senior Lecturer and Clinical Tutor Medical Ethics, YLL, NUS, 2006 - present
  • Clinical teacher, LKC School of medicine, NTU, 2016 - present
  • External Lecturer, Nanyang Polytechnic School of Nursing, 2005 - present
  • Reviewer, Journal of Paediatric Surgery case reports, 2014 - Present
  • Reviewer, Singapore Medical Journal (SMJ), 2007 - Present
  • Fellow, Academic Medicine Education Institute AM.EI, SingHealth, 2013 - present
  • Board Member /Chairman, Chapter of Paediatric Surgeons, College of Surgeons, Singapore, 2008 - 2015
  • Deputy Vice-chair, Education, SURG ACP SingHealth, 2013 - 2016


  • SingHealth Excellence Award – Distinguished Educator Award, SHS 2017
  • KK People Developer (KKPD) Outstanding Clinical Teacher Award, KKH 2014
  • SingHealth Academy Talent Development Fund Grant, Masters of Surgical Education, SHS 2013
  • KKH Service From the Heart Awards, KKH 2013, 2009, 2008, 2007 and 2006
  • Singapore Health Quality Service Award (Silver), 2010
  • SingHealth Academy Talent Development Fund Grant Harvard Macy Program for Educators in Healthcare Professions, SHS 2011
  • Excellence Service Awards (Star), SPRING Singapore 2009 and 2006
  • Singapore Medical Journal Recognition Awards for reviewing with distinction, SMJ 2008 and 2007
  • Clinical Process Improvement Project (Gold), KKH 2007
  • Excellence Service Award (Silver), SPRING Singapore 2005

Publications and Research Trials

  • Understanding Experiences of Youth Growing Up with Anorectal Malformation or Hirschsprung's Disease to Inform Transition Care: A Qualitative In-Depth Interview SA Nah, CCP Ong, D Lie, VJ Marimuttu, J Hong, T Yap, Y Low. European Journal of Pediatric Surgery 2018, 28 (01), 067-074
  • Neuronal defects an etiological factor in congenital pelviureteric junction obstruction? GY How, KTE Chang, AS Jacobsen, TL Yap, CCP Ong, Y Low, JC Allen. Journal of Pediatric Urology 2017
  • Anorectal malformation & Hirschsprung's disease: A cross-sectional comparison of quality of life and bowel function to healthy controls SA Nah, CCP Ong, SE Saffari, LY Ong, TL Yap, Y Low, AS Jacobsen. Journal of Pediatric Surgery 2018.
  • STING versus HIT technique of endoscopic treatment for vesicoureteral reflux: A systematic review and meta-analysis. TL Yap, Y Chen, SA Nah, CCP Ong, AS Jacobsen, Y Low. Journal of Pediatric Surgery 2016; 51(12):2015-2020
  • The role of ischemia in necrotizing enterocolitis. Chen Yong; Chang Kenneth Tou En; Lian Derrick Wen Quan; Lu Hao; Roy Sudipto; Laksmi Narasimhan Kannan; Low Yee; Krishnaswamy Gita; Pierro Agostino; Ong Caroline Choo Phaik. Journal of pediatric surgery 2016; 51(8):1255-1616
  • Beliefs and values about intra-operative teaching and learning: a case study of surgical teachers and trainees. Caroline CP Ong, Agnes Dodds, Debra Nestel. Advances in Health Sciences Education 2016; 21(3):587-607
  • Factors Predicting Testicular Atrophy after Testicular Salvage following Torsion. Lian Bertrand S Y; Ong Caroline C P; Chiang Li Wei; Rai Rambha; Nah Shireen Anne. European Journal of Pediatric Surgery 2016; 26(1):17-21
  • Candy crush: a confounding presentation of blood per rectum in a child. Ng Yvonne Ying Ru; Ong Han Lim; Sim Siam Wee; Ong Caroline Choo Phaik. BMJ case reports 2015; 10.1136/bcr-2015-211634
  • A new 2-step risk-stratification clinical score for suspected appendicitis in children. Yap Te-Lu; Chen Yong; Low Wilson Wei Xin; Ong Caroline Choo Phaik; Nah Shireen Anne; Jacobsen Anette S; Shen Liang; Low Yee. Journal of pediatric surgery 2015; 50(12):2051-2555
  • Undescended testis: Level of knowledge among potential referring health-care providers. Lim Li Yan; Nah Shireen A; Lakshmi Narasimhan K; Yap Te-Lu; Jacobsen Anette S; Low Yee; Ong Caroline C P. Journal of paediatrics and child health 2015; 51(11):1109-1141
  • Unprofessional doctors--are they really born this way? Ong Caroline C P; Tan Nigel C K. Annals of the Academy of Medicine, Singapore 2014; 43(11):521-533
  • Pseudomembranous trigonitis in a male with Klinefelter syndrome: a case report and evidence of a hormonal etiology. Lian Derrick W Q; Li Fay X; Ong Caroline C P; Kuick C H; Chang Kenneth T E. International journal of clinical and experimental pathology 2014; 7(6):3375-3999
  • Undescended testis: 513 patients' characteristics, age at orchidopexy and patterns of referral. Nah Shireen A; Yeo Charleen S W; How Guo Yuan; Allen John C; Lakshmi Narasimhan K; Yap Te-Lu; Jacobsen Anette S; Low Yee; Ong Caroline C P. Archives of disease in childhood 2014; 99(5):401-466
  • Transanal endorectal pull-through versus transabdominal approach for Hirschsprung's disease: a systematic review and meta-analysis. Chen Yong; Nah Shireen A; Laksmi Narasimhan Kannan; Ong Caroline C P; Chua Joyce H Y; Jacobsen Anette; Low Yee. Journal of pediatric surgery 2013; 48(3):642-651
  • Primary hepatic artery embolization in pediatric blunt hepatic trauma. Ong Caroline C P; Toh Luke; Lo Richard H G; Yap Te-Lu; Narasimhan Kannan. Journal of pediatric surgery 2012; 47(12):2316-2202
  • Anomalies associated with anorectal malformations according to the Krickenbeck anatomic classification. Nah Shireen A; Ong Caroline C P; Lakshmi Narasimhan K; Yap Te-Lu; Jacobsen Anette S; Low Yee. Journal of Pediatric Surgery 2012; 47(12):2273-2888
  • Implications of incidental finding of testicular microlithiasis in paediatric patients. Chiang Li Wei; Yap Te-Lu; Asiri Musaed Mohammed; Phaik Ong Caroline Choo; Low Yee; Jacobsen Anette Sundfor. Journal of pediatric urology 2012; 8(2):162-155
  • Malignant peripheral nerve sheath tumor mimicking carotid body tumor--case report and review. Lee R M; Ong C P; Jacobsen A S; Chan M Y; Hwang W S. Journal of pediatric surgery 2011; 46(3):554-588
  • A novel teaching proposition: case-based, evidence-based debate. Caroline CP Ong, KL Narasimhan. Medical Education 2010; 44(5):515-516
  • Meckel's diverticular complications in children: is laparoscopy the order of the day? Sai Prasad T R; Chui Chan Hon; Singaporewalla Fatima Reyaz; Ong Choo Phaik Caroline; Low Yee; Yap Te Lu; Jacobsen Anette Sundfor. Pediatric surgery international 2007; 23(2):141-177
  • Germ cell development in the descended and cryptorchid testis and the effects of hormonal manipulation. Ong C; Hasthorpe S; Hutson J M. Pediatric surgery international 2005; 21(4):240-254
  • The learning curve in learning the curve: a review of Nuss procedure in teenagers. Ong Caroline C P; Choo Kelvin; Morreau Philip; Auldist Alex. ANZ journal of surgery 2005; 75(6):421-444
  • Carbon dioxide laser circumcisions for children. How A C S W; Ong C C P; Jacobsen A; Joseph V T. Pediatric surgery international 2003; 19(1-2):11-13
  • Comparing wound closure using tissue glue versus subcuticular suture for pediatric surgical incisions: a prospective, randomised trial. Ong C C P; Jacobsen A S; Joseph V T. Pediatric surgery international 2002; 18(5-6):553-555
  • Secondary Procedures for Reconstruction in Esophageal Atresia. C.C.P.Ong, V.T.Joseph and A.S. Jacobsen. Asian Journal of Surgery 2001; 24(4):337-340
  • Case Report: An Unusual Penile Deformity. C.C.P. Ong, W.K.O. Lau and V.T. Joseph. BJU International 2000; 85(1):

Research Trials