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Dr Ooi Wei Seong

Dr Ooi Wei Seong
Dr Ooi Wei Seong
  • The Harley Street Heart and Cancer Centre


    38 Irrawaddy Road #07-41
    Mount Elizabeth Novena Specialist Centre
    Singapore 329563

    6694 0040
  • The Harley Street Clinic Heart Specialists


    6A Napier Road #03-37C
    Gleneagles Hospital Annexe Block
    Singapore 258500

    6472 3704
  • Specialty

    • Medical Oncology
  • Qualifications

    • MB BCh BAO (Honours) – Trinity College Dublin
    • MRCP (UK) – Royal College of Physicians United Kingdom
    • FAMS (Medical Oncology) – Academy of Medicine Singapore
  • Languages Spoken

    • Cantonese
    • English
    • Hokkien
    • Malay/Indonesian
    • Mandarin


  • Dr. Ooi graduated from Trinity College Dublin with honours distinction in 1999 in Ireland. He obtained MRCP (UK) certification and became a member of the Royal College of Physicians (UK) in 2003. He did his oncology training at St Vincent’s University Hospital in Dublin and worked in Ireland for a number of years before subsequently moving to Canada. He spent three years at Sunnybrook Odette Cancer Centre in Toronto, Canada as a clinical fellow in medical oncology.
  • Prior to joining Harley Street Clinic Singapore, Dr Ooi was practicing at National Cancer Centre Singapore (NCCS) and subsequently at Raffles Hospital. He is now a Visiting Specialist at the National Cancer Centre Singapore. He was also a recipient of the Singapore Health Quality Service Award in recognition of his exemplary service to patients.
  • Dr Ooi has given talks to overseas oncologists and general practitioners on managements of cancers in the region. He has also spoken at local GP symposiums, conducted workshops for cancer patients and public forums. He was a Clinical Tutor at Yong Loo Lin School of Medicine, in addition to providing teachings to junior doctors, nurses, Duke-NUS students, and elective fellows. He is also a co-investigator for many cancer trials and has published widely in medical journals.
  • Dr Ooi is well versed in general oncology and has special interests in the treatment of lung, gastrointestinal, genitourinary and head & neck cancers.

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