Dr David Tan

Senior Radiation Oncologist
Asian Alliance Radiation & Oncology

Dr. David Tan is a Consultant Radiation Oncologist at Asian Alliance Radiation & Oncology. His clinical expertise is in the management of gynaecological, gastrointestinal, hepato-biliary and lung cancers, and in the use of Stereotactic Body Radiotherapy (SBRT) in the treatment of liver, pancreas and oligometastatic disease. He is also trained in Brachytherapy for gynaecological cancers.

Dr. Tan graduated from the National University of Singapore in 2005 with a Bachelor of Medicine and Bachelor of Surgery (MBBS), and commenced training in Radiation Oncology in 2007. In 2011, Dr. Tan was awarded a Health and Manpower Development Award by the Singapore Ministry of Health to undergo a Fellowship in Advanced Oncology in the UK. There, at the Mount Vernon Cancer Cancer in Middlesex, he obtained advanced training in general oncology and further subspecialized in the above tumour sites. He also trained under renowned experts in stereotactic radiosurgery and brachytherapy. Dr. Tan subsequently obtained the FRCR in Clinical Oncology in 2013 and was admitted as a Fellow of the Academy of Medicine, Singapore (FAMS) in Radiation Oncology in 2014

Prior to joining AARO, Dr. Tan worked as Consultant Radiation Oncologist at the National Cancer Centre Singapore (NCCS). During his 10 years of service in the public sector, he pioneered the Liver and Pancreas SBRT programs, and oversaw their development from protocol development to patient enrolment and subsequently to treatment of increasingly complex cases such as multiple liver metastases and portal vein thrombosis in hepatocellular carcinoma (HCC). He was a strong advocate of advanced radiotherapy techniques and frequently organized talks and multi-disciplinary discussions to update his peers and surgical & medical oncology colleagues on their applications and benefits.
Dr. Tan is the Singapore National Project Coordinator for the International Atomic Energy Agency (IAEA) Regional Project 6085, which aims to Enhance Stereotactic Body Radiation Therapy for Frequent Cancers in the Asia-Pacific Region. After establishing Singapore as one of the regional training hubs in Asia-Pacific, Dr. Tan conducted the first regional training course of the project in NCCS in 2016, which was attended by participants from 17 member states. He is also council member of the Federation of Asian Organizations for Radiation Oncology (FARO), which is a non-profit scientific organization comprising national radiation oncology societies in Asia to improve the level of radiotherapy in the region.

On the local front, Dr. Tan serves as an executive committee member in the Singapore Radiological Society (SRS) where he holds the office of honorary treasurer, and is also a fellow in the Academy of Medicine. As an active member of the radiation oncology subsection of the SRS, Dr. Tan organizes annual scientific dinner-symposiums for the local oncology community to update them on the latest advances in radiotherapy in common tumor sites such as liver, lung and gynecological tumors, as well as on latest technologies such as proton therapy. Dr. Tan also held position as Adjunct Assistant Professor at the Duke-NUS Graduate Medical School where he hosted and supervised medical students for clinical attachments at NCCS, and was clinical lecturer at the Nanyang Polytechnic School of Radiation Therapy where he gave lectures to budding radiation therapists.

Dr. Tan is actively involved in clinical research and has published in major oncology journals on a wide range of topics including SBRT, brachytherapy, gastrointestinal and gynaecological cancers. He was invited to be guest editor for a focused issue entitled “Advances in Stereotactic Radiosurgery” in the Chinese Clinical Oncology journal in 2017, where with his co-editors he formulated content and collaborated with international experts to publish the latest updates in stereotactic radiotherapy treatments. He frequently contributes as a reviewer in surgical, oncology and radiotherapy journals. Dr. Tan is a member of the following international oncology societies: American Society of Clinical Oncology (ASCO), American Society for Radiation Oncology (ASTRO), European Society for Radiotherapy and Oncology (ESTRO) and the International Stereotactic Radiosurgery Society (ISRS).​

Dr Soon Yu Yang

Consultant Radiation Oncologist
National University Cancer Institute Singapore

Dr Jonathan Teh

Senior Radiation Oncologist
Asian Alliance Radiation & Oncology

Dr Jonathan Teh Yi Hui is a radiation oncologist at Farrer Park Hospital, as well as the Asian Alliance Radiation & Oncology. Prior to joining AARO, he was a consultant at the National Cancer Centre Singapore (NCCS), where he had served in various roles since 2006. He specialises in genitourinary and gastrointestinal cancers, as well as bone and soft tissue sarcomas and paediatric cancers.  After completing his MBBS at the National University of Singapore (NUS) in 2002, Dr Teh commenced a Radiation Oncology residency at NCCS in 2007. He received the Singhealth Health Manpower Development Programme Award for Advanced Training in Clinical Oncology in 2009 and was an Honorary Clinical Fellow in the University College Hospital London Oncology department from 2009 to 2011. He was also active in the London Sarcoma Service, providing patient care and participating in clinical trials.

In 2011, he received the Fellowship of the Royal College of Radiologists (FRCR UK) in Clinical Oncology. Upon returning to Singapore, Dr Teh was admitted as a Fellow of the Academy of Medicine of Singapore’s (FAMS) Chapter of Radiation Oncology and commenced work as a Consultant Radiation Oncologist at NCCS. In 2012, he joined the NCCS Blood Transfusion Committee until July 2017 and also received the Singhealth Doctor’s Long Service Award.  Dr Teh’s research interests include advanced radiotherapy for prostate cancer treatment. He was the Principal Investigator of a Phase II Trial in Stereotactic Ablative Body Radiotherapy for Low-Intermediate Risk Prostate Cancer from 2013 to 2017, which was Southeast Asia’s first trial of this non-invasive technique.

Dr Teh’s work has been presented at international conferences, and he has also been invited to speak on these subjects in regional meetings. He has written and published extensively on the subject of sarcoma treatment.

Dr Timothy Cheo

Consultant Radiation Oncologist
National University Cancer Institute Singapore

Dr Tan Teng Hwee

Associate Consultant Radiation Oncologist & Assistant Research Director
National University Cancer Institute Singapore

Dr Brendan Chia

Consultant Radiation Oncologist
National Cancer Centre Singapore

Dr Daniel Tan

Senior Radiation Oncologist
Asian Alliance Radiation & Oncology

Dr. Daniel Tan Yat Harn is medical director and senior radiation oncologist at Asian Alliance Radiation & Oncology. He specialises in the use of Stereotactic Radiosurgery (SRS/SBRT) and Advanced Radiation Technologies to treat complex cancers. His clinical interests are in the management of central nervous system (Brain and Spine) tumors, prostate and breast cancers. Prior to entering private practice, Dr. Tan was consultant radiation oncologist in the Division of Radiation Oncology, National Cancer Centre Singapore, where he led the development of the first SRS and SBRT programs in Singapore for various organ sites.

After graduating from the National University of Singapore (NUS) in 2002, Dr. Tan underwent specialist training at the National Cancer Center Singapore (NCCS) and was awarded a Health Manpower Development (HMDP) award by the Ministry of Health (MOH) in 2008 for training in Clinical Oncology. He obtained his Fellowship of the Royal College of Radiologists in the UK (FRCR) in Clinical Oncology in 2011 and was given another HMDP Award for training in brachytherapy, stereotactic radiosurgery and body irradiation (SRS/SBRT) in 2012. Dr. Tan was admitted as a Fellow of the Academy of Medicine of Singapore (Radiation Oncology) in 2012.

His subspecialty training was with a focus on neurooncology at international premier centres, including Proton Therapy at University of Pennsylvania’s Roberts Proton Therapy Center in USA, Spine Radiosurgery at Princess Margaret Hospital and Sunnybrook’s Odette Cancer Centre in Toronto, Canada and Advanced Radiation Technologies at Tokyo Metropolitan Komagome Hospital in Japan

Dr. Tan’s research interests were in the evaluation of the use of stereotactic radiosurgery (SRS) and stereotactic body radiation therapy (SBRT) in benign and malignant tumours of the brain, spine and body. Together with his mentors, he developed the Novalis Brain Stereotactic Radiosurgery Program at the National Cancer Centre Singapore (NCCS) and subsequently developed the Novalis Spine Stereotactic Radiosurgery Program after returning from abroad. This was the first of such services in Singapore and the region.

Dr. Tan was the national project coordinator for the International Atomic Energy Agency’s (IAEA) healthcare project 6065 involving efforts to train and develop SBRT, an advanced radiation technique, in countries within the Asia-Pacific Region. He was course director for the first regional SBRT training course in 2012 and in 2014 he was invited to IAEA as an expert consultant for preparation of phase 2 of the project.

Dr. Tan’s work has been presented at major international conferences, and he has written and published in research journals on the subjects of neuro-oncology, stereotactic radiosurgery (SRS) and stereotactic body radiation therapy (SBRT). He is frequently invited to speak these subjects in regional meetings.

In NCCS, Dr. Tan held the appointments of co-chairperson of the Neuro-Oncology Cancer Service Line Development workgroup as well as clinical lecturer at the Yong Loo Lin School of Medicine at NUS. Dr. Tan also served as an executive committee member of the Singapore Radiological Society and council member of the College of Radiology Singapore. He was organizing chairman of their 24th Annual Scientific Meeting and the event RadiologyAsia 2015.

In 2015, he founded AARO with a mission to provide subspecialised radiation oncology services in the private sector, aligning with the practice of leading international cancer centers, where specialists devote their practice to specific cancers and procedures so as to achieve clinical excellence. He holds an MBA in Healthcare Management from NUS business school and has also helped to develop several private cancer centers locally and abroad​.​