
Oncology
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.
sandymiao
November 28, 2025 at 11:28 AM
Been seeing doctors and nurses since surgery last year, they've all been a huge help to help me get through my illness and surgery. Thanks to my doctors Dr.Margaret, Dr.Teoh, Dr.Jeffrey & Dr.Jennifer, without them I wouldn't be able to write this review. Thanks to all the nurses from CCU, A&E and normal ward, they took good care of me during my admission. Special thanks to Yong, Kak Ika, Kak Su, Kak Siti, Ain and other nurses at Tower A 5th floor for their constant kindness and support. The doctors and nurses encouraged me alot and gave many information for me and my husband to deal with after treatment & surgery care. I can't say I'd love to go back to the hospital 😅 But SunMed would definitely be my first choice.
W T
November 1, 2025 at 9:09 AM
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View Content on GoogleAida Abdullah
November 1, 2025 at 9:09 AM
Perkhidmatan kesihatan swasta yang berkualiti. Barisan petugas kesihatan yang sangat berdedikasi. Tidak ketinggalan juga staff bukan kesihatan seperti Rino yang banyak membantu semasa saya berada di wad. Sangat recommended utk mendapatkan perkhidmatan disiniI came for Orthopaedic Clinic today (22/11/2024) with Dr Lau Choon Ping due to my problem with spine. Dr Lau is my favourite specialist because he always have solution for every problem that I have. He perform laparoscopic spine fusion for me in 2021 and even recommend me to see Dr Jennifer for my cancer treatment. Its been a smooth journey for my treatment here and I recommend everyone to come and get the best treatment here
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yuri min
November 1, 2025 at 9:09 AM
I would say Sunway Medical Centre, esp their cancer treatment centre is one of the best in South East Asia, equipped with top facilities, professional and experienced doctors with high qualifications, and nurses are friendly and caring to the patients. Thank you Dr Jennifer, staff nurse Amanda and all the cute staff nurses for the exceptional care 🫶🏻🫶🏻
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. ❤️
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