Dr Jennifer Leong Siew Mooi
Oncology
About Doctor
Dr. Jennifer Leong Siew Mooi is a Consultant Clinical Oncologist at Sunway Medical Centre in Malaysia, with over 18 years of experience. She obtained her MBBS from the International Medical University (IMU) and her MCO from the University of Malaya (UM). Dr. Leong specializes in treating cancers such as breast, cervical, and ovarian cancer, with a focus on targeted therapy, chemotherapy, and radiotherapy. She is known for her excellent patient care, even receiving an Excellent Service Award in 2019. She is also a member of several professional organizations, including the Malaysian Oncological Society (MOS), the Malaysian Medical Association (MMA), the European Society of Medical Oncology (ESMO), and the European Society for Radiotherapy & Oncology (ESTRO). Dr. Leong is fluent in multiple languages, including English, Bahasa Malaysia, Mandarin, Cantonese, and Hokkien.
Qualifications
- MCO (UM)
- MBBS (IMU)
Languages Spoken
Patient Reviews
CHEE SENG LAW
October 16, 2025 at 9:28 AM
Dr. Jennifer Leong - Sunway Medical Cancer Centre Highly recommend Dr. Jennifer and her amazing team! Dr. Jennifer is honestly one of the kindest and most caring doctors I’ve ever met. She really takes the time to listen and explain things clearly — never rushes, never makes you feel like “just another patient.” The way she communicates gives hope, not fear, and that means so much when you’re going through cancer treatment. She’s also very knowledgeable and keeps herself updated through international conferences — you can tell she truly cares about giving her patients the best. Big shoutout to her lovely assistant Wei Chyn too! She’s super helpful, efficient, and always kind whenever I have questions or need help with appointments. Both of them make every visit feel calm, positive, and full of hope. I’m really grateful to have them on my journey. ❤️
Affiliated Hospitals
Sunway Medical Centre
Subang Jaya, Malaysia
Sunway Medical Centre
Subang Jaya, Malaysia