Dr Ivan Tham Weng Keong
Senior Consultant
Specialty Radiation Oncology
Phone +65 6470 5830
Fax +65 6470 5831
Email ivan.tham@ihhhealthcare.com

MBBS (Singapore), FRCR (Clinical Oncology, UK), FRANZCR (Radiation Oncology)

Languages Spoken Cantonese, English, Mandarin
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Clinic Address(es)

6A Napier Road
Gleneagles Hospital Level 1
Radiation Oncology Centre,

Singapore 258500

3 Mount Elizabeth
Mount Elizabeth Hospital
Level 2
Radiation Oncology Centre,
Singapore 228510

Tel: +65 6731 2782

38 Irrawaddy Road
Mount Elizabeth Novena
Hospital Basement 1
Radiation Oncology Centre,
Singapore 329563

Tel: +65 6933 0128

38 Irrawaddy Road,
Mount Elizabeth Novena
Hospital Basement 2
Proton Therapy Centre
Singapore 329563
Tel: +65 6933 0211
Email: protontherapy@ihhhealthcare.com


Dr Ivan Tham Weng Keong is a Senior Consultant, Radiation Oncologist at Parkway Cancer Centre. He has special interest in head and neck cancers, lung cancers and general radiation oncology. Dr Ivan Tham Weng Keong has experience with a variety of treatment techniques. These include stereotactic radiosurgery (SRS), stereotactic body radiotherapy (SBRT) or stereotactic ablative body radiotherapy (SABR), image-guided radiotherapy (IGRT), intensity modulated radiotherapy (IMRT), 3D conformal radiotherapy (3DCRT) and brachytherapy.

Dr Ivan Tham Weng Keong graduated from the National University of Singapore in 2000. He started his training in Radiotherapy in 2006. He completed his fellowship of the Royal Australian and New Zealand College of Radiologist in 2009. Dr Ivan Tham Weng Keong has also received the certification of Full Medical & Specialist Registration (Radiation Oncology). He is also a recognized Specialist in Radiation Oncology in Australian Medical Council and Australian Health Practitioner Regulation Agency.

Dr Ivan Tham Weng Keong was previously the Head of Department and Senior Consultant at the National University Hospital and Tan Tock Seng Hospital, as well as Associate Professor at the National University of Singapore. He received training in clinical and radiation oncology at the National Cancer Centre, Singapore and Guy’s & St Thomas’ NHS Foundation Trust, UK.

Dr Ivan Tham Weng Keong currently serves in the Residency Advisory Committee (Radiation Oncology). He was also engaged in various other committees in the Ministry of Health previously, such as the Proton Beam Therapy Advisory Committee and a National Advisory Committee on Cancer subcommittee. Dr Ivan Tham Weng Keong served as Vice-President of the Federation of Asian Organizations for Radiation Oncology from 2017 to 2018.

Dr Ivan Tham Weng Keong has an active interest in clinical research in cancer, and has co-authored more than 60 peer-reviewed articles on clinical oncology, radiation oncology and imaging. His articles have been cited by other scientists more than 1500 times. He has been involved in teaching both locally and overseas, and has given lectures in Singapore, Malaysia, Indonesia, Taiwan, Vietnam and Japan. He has also contributed to more than 5 textbook chapters in oncology.