Registration for the
Italy 2026 MAMA Obstetric Medicine Course
Now Open

About the Obstetric Medicine Course

The Obstetric Medicine Company has spent over 28 years delivering trusted, high-quality education led by internationally recognised experts across obstetrics, general medicine, haematology, endocrinology, and maternal–fetal medicine.

The course is organised and led by Professors Catherine Nelson-Piercy, Catherine Williamson, and David Williams – internationally recognised leaders in obstetric medicine, with distinguished careers spanning clinical leadership, academic research, and national and international guideline development.

Long established in London and widely recognised for its excellence, the programme now expands to Lake Garda in 2026, bringing the same expert faculty and comprehensive learning experience to a new international setting

Prof Catherine Nelson-Piercy

Prof Catherine Williamson

Prof David Williams

The MAMA Course:
Managing Medical Problems in Pregnancy.

Medical complications
in pregnancy course

Professor Catherine Nelson-Piercy

Guy’s & St Thomas’ Hospital

Catherine Nelson-Piercy is a Consultant Obstetric Physician at Guy’s and St. Thomas’ Hospitals Trust and the Lead Obstetric Physician for the South East London Maternal Medicine Network and Professor of Obstetric Medicine at King’s College London. She is past President of the International Society of Obstetric Medicine (ISOM). She was founding co-editor in chief of the journal ‘Obstetric Medicine: the medicine of pregnancy.’

Professor Nelson-Piercy was a member of the NHS England expert group that developed the Networked model for maternal medicine and has been involved in the development of many evidence-based National Guidelines notably the RCOG Green top guidelines on “Reducing the risk of thromboembolism during pregnancy, birth & the puerperium” and ‘Management of nausea vomiting of pregnancy and hyperemesis gravidarum”. She has over 200 peer reviewed publications, has edited five books and written the successful Handbook of Obstetric Medicine, now in its sixth edition. She is also one of the central physician assessors for the UK Confidential Enquiries into Maternal Deaths.

Professor Catherine Williamson

Imperial College London

Catherine Williamson is Professor of Women’s Health at Imperial College London. She is also Consultant in Obstetric Medicine at Queen Charlotte’s, St Thomas’ and King’s College Hospitals. She is a Fellow of the Academy of Medical Sciences and is an Honorary Fellow of the RCOG. She is the Maternal Medicine Representative on the RCOG Genomics Committee and was Chair of the European and FIGO guideline committees for the guidelines on management of liver disorders in pregnancy.
Her research focuses on the maternal and fetal aetiology, outcomes and management of intrahepatic cholestasis of pregnancy, gestational diabetes mellitus and severe hyperemesis gravidarum.
Aside from her maternal medicine work, Professor Williamson is Director of the Tommy’s National Research Centre for Preterm Birth Research in the UK and leads a national programme to investigate the genomic aspects of the aetiology of spontaneous preterm birth.

Professor David Williams

University College London Hospital

David Williams is professor of obstetric medicine at the Institute for Women’s Health, University College London (UCL). He specialises in the clinical management of pregnant women with medical and placental disorders. He leads the UCL maternal medicine research group who investigate the causes and targeted treatment of pregnancy syndromes. This includes pre-eclampsia, placental inflammatory syndromes, fetal overgrowth and acute fatty liver of pregnancy.

He developed the concept that pregnancy syndromes unmask a mother’s future health and is currently investigating how the placenta holds the key to the future health of her offspring. He recently worked as part of a national team to implement new clinical maternal medicine networks throughout the UK.

Dr Oseme Etomi

Guy’s and St Thomas’ Hospital and the Queen Elizabeth Hospital

Dr Oseme Etomi is a Consultant Rheumatologist and Obstetric Physician in South East London and works across 2 NHS trusts including Guy’s and St Thomas’ Hospital and the Queen Elizabeth Hospital in Woolwich.

She trained in North-East London, in some of the most prestigious centres for Rheumatology including the Royal Free Hospital (National Centre for Scleroderma and other Connective tissue disorders) and Bart’s and the Royal London (National Centre of inflammatory arthritis and SLE). In 2017, Oseme undertook a clinical fellowship at St Thomas’s Hospital under Professor Nelson Piercy.

Within the field of Obstetric Medicine, her main interest is looking after women with inflammatory diseases and immunosuppression in pregnancy. She runs a weekly inflammatory rheumatic disease and a weekly inflammatory bowel disease clinic in pregnancy.

Oseme has published abstracts and papers on Inflammatory Rheumatic Disease in pregnancy. In 2018 she was awarded the best oral presentation at the international Society of Obstetric Medicine for her work in this field. She was also instrumental in setting up the British Society of Rheumatology Specialist interest group in Pregnancy in 2019. She sits on the advisory board for the Biologics in Rheumatoid arthritis Pregnancy (BiRAP) group and was one of the organisers of the highly successful 12th Rheumapreg Symposium in September 2023 in London.

Her other interests include work on diversity, inclusion and wellbeing. She is the lead for trainee wellbeing in O&G at GSTT. A role she is extremely passionate about.