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Dr Yang Liying

Dr Yang Liying

MBBS, MRCOG, MMed (O&G), MCI, MSc (Med Genetics), FAMS


Singapore General Hospital

Specialty: Surgery & Surgical Oncology

Sub-specialties: Obstetrics & Gynaecology

Conditions Treated by this Doctor:
Ectopic Pregnancy , Fibroids , Fibroids of the uterus , First Trimester Screening , General Obstetrics & Gynaecology , Getting Pregnant During COVID-19 , Gynaecology , High Risk Obstetrics , Labour and Delivery , Medical Disorders in Pregnancy and other Pregnancy Complications , Menorrhagia , Non-Invasive Prenatal Testing , Ovarian Cysts , Polycystic Ovarian Syndrome .

Clinical Appointments

  • Consultant Obstetrics & Gynaecology Singapore General HospitalSingapore General Hospital
  • Consultant Division of Surgery & Surgical Oncology National Cancer Centre SingaporeNational Cancer Centre Singapore

Academic Appointments

  • Clinical Asst Professor, Duke-NUS Medical School
  • Clinical Lecturer, Yong Loo Lin School of Medicine, NUS


Dr Yang Liying is a Consultant in the Department of Obstetrics & Gynaecology. She graduated from the Yong Loo Lin School of Medicine of the National University of Singapore with a Bachelor of Medicine and Bachelor of Surgery (MBBS) degree in 2008. She completed her Master of Medicine in Obstetrics & Gynaecology in 2013 and became a Member of the Royal College of Obstetrics & Gynaecology in the same year. She gained accreditation as a specialist in Obstetrics & Gynaecology in 2016 and obtained her Masters in Medical Genetics in 2021. She is also an International Board-Certified Lactation Consultant (IBCLC).

Dr Yang brings an evidence-based and patient-centric approach to clinical care. Her sub-specialty interests are in Maternal-Fetal Medicine, Prenatal Genetics and Breastfeeding Medicine, as she believes that pregnancy is a unique opportunity to provide quality care that can influence the long-term health of the family, mother and child.


  • Master of Science (Medical Genetics) (CUHK)
  • Master of Clinical Investigation (National University of Singapore)
  • Master of Medicine (National University of Singapore)
  • MRCOG (Royal College of Obstetricians and Gynaecologists, UK)
  • MBBS (National University of Singapore)
  • International Board-Certified Lactation Consultant

Professional Appointments and Committee Memberships

  • Consultant, Obstetrics and Gynaecology
  • Assistant Programme Director, Singhealth OBGYN Residency Programme
  • Physician Faculty Member, SingHealth PGY1 Residency Programme
  • Clinical Faculty, Yong Loo Lin School of Medicine, NUS


  • Outstanding Faculty Award, Singhealth Residency 2017
  • Service with a Heart Award 2017
  • Healthcare Research Scholarship, Ministry of Health 2017
  • Best Oral Presentation, Singhealth/Duke NUS Scientific Congress 2010, 2012
  • Best Oral Presentation, ISUOG Outreach Course 2012 
  • SingHealth O&G Best Advanced Specialist Trainee (2014)
  • SingHealth O&G Best Basic Specialist Trainee (2013)
  • SingHealth Best Medical Officer (2011)
  • SingHealth Duke-NUS Scientific Congress, Best Oral Paper in Evidence-based Medicine (2010 & 2012)
  • SingHealth Best House Officer (2009)

Research Interests


Original Articles

  1. Nissen Fundoplication in Paediatric Patients: 5-yr retrospective review of one centre’s experience. LY Yang, Loh DSK, Prabhakaran K. Paediatrics, Child & Adolescent Health Dec 2006; 46(3)
  2. Obstetric outcomes in women with end-stage renal failure on chronic dialysis: A review. LY Yang, EWH Thia, LK Tan. Obstet Med June 2010 3(2): 48-53.
  3. Prevalence of Endometriosis in Ovarian Cancer. LY Yang, GK Chew. Int J of Gynecol Cancer 2014; 24: 109. 
  4. Renal and obstetric outcomes in pregnancy after kidney transplantation: Twelve-year experience
    in a Singapore transplant centre. JL Kwek, V Tey, LY Yang, Kanagalingam D, Kee T. J Obstet Gynaecol Res 2015 41(9): 1337-44.
  5. The Intrauterine Bigatti Shaver for Endometrial Lesions: Our Experience and Modifications.
    LY Yang, H Rajesh, SL Yu. Open J Obstet Gynecol 2017; 7: 1-6
  6. Altered Placental Chorionic Arterial Biomechanics Properties During Intrauterine Growth Restriction. SN Saw, JH Tay, WP Yu, LY Yang, WC Tan, LK Tan, A Biswas, C Mattar, CH Yap. Nature 2018; 8. 10.1038/s41598-018-34834-5.
  7. Maternal and fetal outcomes in systemic lupus erythematosus. IY Yii, LY Yang, HK Tan, LK Tan, J Thumboo, YJ Poh. Annals of Rheum Dis 2018; 77: 729
  8. Prenatal screening in the era of non-invasive prenatal testing: A Nationwide cross-sectional survey of obstetrician knowledge, attitudes and clinical practice. LY Yang, WC Tan. BMC Pregnancy Childbirth 2020; 20:579.
  9. Attitudes and precaution practices towards COVID-19 among pregnant women in Singapore: A Cross-Sectional Survey. RWK Lee, SL Loy, LY Yang, et al. BMC Pregnancy Childbirth 2020; 20: 675.   
  10. Maternal and Fetal Outcomes in Systemic Lupus Erythematosus. YJ Poh, ILY Yuen, LH Goh, HH Li, LY Yang, HK Tan, J Thumboo, LK Tan. Ann Acad Med  Singap 2020; 49: 963-70. 
  11. Prenatal screening in the era of non-invasive prenatal testing: A survey of obstetrician knowledge, attitudes and preferences. LY Yang, WC Tan. BMC Pregnancy and Childbirth. 2020; 20 (579). 
  12. Maternal and Fetal Outcomes in Systemic Lupus Erythematosus Pregnancies. YJ Poh, IYL Yii, LH Goh, HH Li, LY Yang, HK Tan, J Thumboo, LK Tan.  Ann Acad Med Singap 2020;49:963-70.

Letters (e.g. to Editor), Editorials & Case Reports

  1. Spontaneous uterine rupture secondary to recurrent haematometra from cervical stenosis. LY Yang, Kanagalingam D. Singapore Med J 2012 53(6): e114-6. 
  2. First, Do No Harm: Why Breastfeeding Matters. TT Yong, LY Yang. Annals Acad Med 2019; 48(8): 238-240.
  3. An unusual cancer involving the rectum: Two cases of localized primary peritoneal carcinoma mimicking rectal carcinoma. JSY Pang, LY Yang, GK Chew, MH Chew. Int J Colorectal Dis 2016 31(3): 717-8.
  4. Postmenopausal bleeding in a woman with a Caesarean Scar Defect: A Case Report. HMS Chin, ZY Ng, LY Yang. Case Reports in Women’s Health 2020; 27: e00235
  5. Impact of true fetal mosaicism on prenatal screening and diagnosis. Lim PT, Yang L, Tan WC. Ann Acad Med Singap. 2021 Jul;50(7):578-579.

Research Trials