Executive Council

ISOM Officers


Kenneth ChenKenneth Chen

Kenneth K. Chen, MBBS FRACP, has been the director of the Division of Obstetric and Consultative Medicine and co-director of the Integrated Program for High Risk Pregnancy at Women & Infants Hospital, Providence, Rhode Island, USA since January 2012.  Dr. Chen completed dual fellowships in endocrinology at The Prince of Wales Hospital, University of New South Wales, Sydney, and in obstetric and consultative medicine at Women & Infants Hospital, Brown University.  He served as a full-time staff specialist and conjoint lecturer in endocrinology and obstetric medicine at The Prince of Wales Hospital and Royal Hospital for Women in Sydney from January 2010 to December 2011.  Dr. Chen is currently an assistant professor of medicine and assistant professor of obstetrics & gynecology at The Warren Alpert Medical School of Brown University.  
Dr. Chen’s primary clinical interests include medical disorders in pregnancy with a special expertise in diabetes, obesity and endocrine disorders in pregnancy.  He has special interests in the use of insulin pumps in pregnancy; polycystic ovarian syndrome and endocrine causes of infertility; and pre-conception counseling for women with chronic medical conditions.  He is the co-director of the Obesity in Pregnancy service at WIH which was the first of its kind set up in North America back in 2012.  He is currently the fellowship director & residency coordinator of his program. 

He was the co-scientific director of the 7th International Society of Obstetric Medicine (ISOM) Scientific Meeting which occurred at New Orleans in October 2014.  He was elected as a member of ISOM's executive committee during this conference

Immediate Past President

Sandra LoweSandra Lowe

Sandra Lowe, MBBS (Hons.) FRACP, MD is a Consultant Obstetric Physician at the Royal Hospital for Women in Sydney, Australia and Conjoint Associate Professor at the University of NSW.

A/Prof Lowe speaks regularly at National and International conferences of Obstetric Medicine and she has a long-standing interest in teaching obstetric medicine She has published numerous articles including national guidelines on the management of hypertension in pregnancy in Australia and contributed chapters to a number of textbooks of obstetric medicine. A/Prof Lowe is the Founding Co-editor of the international journal; “Obstetric Medicine”. She has had longstanding executive roles with both local and international Societies of Obstetric Medicine and is currently President of the International Society of Obstetric Medicine.



Winnie SiaWinnie Sia

Winnie Sia is an Associate Professor in the Departments of Medicine and Obstetrics and Gynecology, at the University of Alberta (U of A), in Edmonton, Canada. She is the Director of the Obstetric Medicine fellowship at U of A, and is the Chair of the national Obstetric Medicine fellowship Working group whose goal is to apply Obstetric Medicine as a field of diploma program that is recognized by the Royal College of Physicians and Surgeons. Her research interests are postpartum venous thromboembolism, and long term vascular health in women who developed preeclampsia. Outside work, she functions as a chauffeur for her two children. She enjoys good food, travelling, and she tries to practice playing badminton to avoid consistently being beat by her children!

Past President

Catherine Nelson-PierceyCatherine Nelson-Piercey

Catherine Nelson-Piercy is a Consultant Obstetric Physician at Guy’s and St. Thomas’ Hospitals Trust and Queen Charlotte’s and Chelsea Hospital in London. In 2010 she was awarded the title of Professor of Obstetric Medicine at King’s College London. Her undergraduate studies were at King’s College, Cambridge University and St Bartholomew’s Hospital. She trained as a physician, and was taught Obstetric Medicine by Professor Michael de Swiet.

Professor Nelson-Piercy is the immediate past President of the International Society of Obstetric Medicine (ISOM). She is co-editor in chief of the journal ‘Obstetric Medicine: the medicine of pregnancy.’
Professor Nelson-Piercy has been involved in the development of several evidence-based National Guidelines notably for “Contraception in Women with Heart Disease”, BTS / SIGN “Asthma in Pregnancy” and RCOG Green top guideline on “Reducing the risk of thromboembolism during pregnancy, birth & the puerperium”. She has over 200 publications and has edited five books and written the successful Handbook of Obstetric Medicine, now in its fifth edition. She is also one of the central physician assessors for the UK Confidential maternal deaths enquiry.



Research and Education

Lawrence McMahonLawrence McMahon

Lawrie has been Director of the Department of Renal Medicine at Eastern Health and Professor of Nephrology at Monash University since 2008. Before this he was at the Western and Royal Melbourne Hospitals for 15 years, following a two year post-doctoral fellowship in Oxford.  He has established the Obstetric Medicine Service at Eastern Health and is Past-President of the Society of Obstetric Medicine of Aust & NZ.

He is and has been a member of various editorial boards and committees; including Chair of Victorian Renal Health Clinical Network Dialysis Sub-Committee, and a member of the Renal Health Clinical Network Leadership Group. He has been Associate Editor of Nephrology, Dialysis and Transplantation, and remains a regular reviewer of numerous international journals. He is involved in several international and national research studies and maintains an active interest in teaching primarily through his role as senior national examiner for the Royal Australasian College of Physicians. He maintains an active interest in clinical medicine, and clinical and laboratory-based research.



Regional Representatives

Africa Wilhelm Steyn
Asia Lay-Kok Tan
Australia Karin Lust
Europe Risto Kaaja
India Hemamalini Vadlamani
Japan Atsuko Murashima
Middle East Bashir Taha Salih
North and South America Erin Keely
Sri Lanka Chandrika Wijeyaratne
United Kingdom Catherine Williamson