Our team is well versed with the latest advances in fertility treatments and consists of consultants who are experts in the field of Reproductive Medicine. Their knowledge and dedication has resulted in CRGH’s high level of performance and success rates over several years.

London Clinic

Mr Paul Serhal
Medical Director, Hon. Consultant/Senior Lecturer

Mr Paul Serhal is an accredited consultant in Reproductive Medicine and is a Fellow of the Royal College of Obstetricians and Gynaecologists. He was a Clinical Lecturer in Obstetrics and Gynaecology at University College London Hospital in 1987, and in 1990 was appointed as Honorary Consultant in Reproductive Medicine and Honorary Senior Lecturer at University College London (UCL). He is the medical director of The Centre for Reproductive & Genetic Health (CRGH) which he founded in 1990.

His vast experience of male and female infertility has ensured that CRGH is amongst world-class leaders in the pioneering of new techniques, such as pre-implantation genetic diagnosis and the advancement of fertility treatments.

Mr Serhal has published more than 100 articles in books and journals and frequently lectures at international conferences.

He reported with professor Ian Craft the first pregnancy in the UK in post-menopausal women using donated eggs. The results were published in The Lancet in 1987.

In 2004 he was granted the first UK licence for screening a genetic form of bowel cancer, Familial Adenomatous Polyposis Coli (FAP), with pre-implantation genetic diagnosis (PGD) from the Human Fertilisation and Embryology Authority. In 2005, he was also granted the first UK Licence for screening embryos for a genetic form of cancer of the eye (Retinoblastoma). He reported the first baby born in the UK following PGD for a genetic form of breast cancer (BRCA1) in 2009.

He is actively involved in a number of teaching and training programmes.

Mr Serhal appears on many radio and television documentary programmes about women’s health.


Mr Ozkan Ozturk
Consultant Gynaecologist, Accredited Subspecialist in Reproductive Medicine, Deputy Medical Director

Mr Ozturk is a consultant gynaecologist and specialist in reproductive medicine. Mr Ozturk received his research degree from University of London on the “Clinical aspects of embryo implantation” and his Master’s degree from University of Aberdeen on the “Quality assessment in assisted conception”.

He worked as a consultant gynaecologist and senior lecturer at University College London Hospitals before becoming the Deputy Medical Director at the CRGH in 2010. He has published widely on factors affecting the outcome of IVF treatment including uterine and ovarian blood flow, multiple pregnancy and treatment quality.


Mr Wael Saab
Fertility Consultant, Deputy Clinical Director

Mr Wael Saab is a fertility consultant and Deputy Clinical Director at the CRGH, joining our team in 2007. Mr Saab trained in Obstetrics and Gynaecology with specialist interest in infertility and the treatment of the infertile couple, ranking in the top one percent in international medical exams whilst training. Mr Saab is highly skilled in gynaecologic ultrasound, 3 Dimensional pelvic scanning and early first trimester ultrasound. He also has a Bachelors degree in Biology with distinction. His broad knowledge in different fields of medicine made him interested in research.

Mr Saab has had publications in books and in medical journals on natural cycle IVF and various other aspects of fertility and obstetrics and gynaecology. Mr Saab is a member of the Royal College of Obstetricians and Gynaecologists, and a member of the British Medical Acupuncture Society. Mr Saab is experienced in Reproductive Immunology and the management of recurrent IVF failures. Academically, he is an Honorary Clinical Senior Lecturer in the field of Reproductive Science and Women’s Health for MSc students at UCL.



Ms Jara Ben Nagi
Consultant Gynaecologist & Accredited Sub-specialist in Reproductive Medicine & Surgery

Ms Jara Ben Nagi is a consultant gynaecologist and specialist in reproductive medicine and surgery. After graduating from Guy’s, King’s and St. Thomas’s medical school, she trained in obstetrics and gynaecology, where she worked in several London teaching hospitals including King’s College, Guy’s & St. Thomas’s and Chelsea and Westminster Hospital. Ms Ben Nagi also undertook a two year research fellowship, which investigated various factors that affect the intrauterine environment. This resulted in her being awarded a research degree (MD) from University of London in 2009. She has widely published in high impact peer reviewed journals including Human Reproduction, Lancet oncology and Ultrasound in Obstetrics and Gynecology.


Ms Ben Nagi is highly skilled in advanced 3D gynaecological ultrasound scanning and HyCoSy. She is also experienced in hysteroscopic surgery. She is head of the preimplantation genetic programme at CRGH and surrogacy lead.

Ms Ben-Nagi is an Honorary Clinical Senior Lecturer at Imperial College London.

Publications : PubMed

Ms Srividya Seshadri
Consultant Gynaecologist & Accredited Sub-specialist in Reproductive Medicine & Surgery, Head of Clinical Research & Development

Ms Srividya Seshadri is a Consultant Gynaecologist & accredited sub-specialist in reproductive medicine & surgery and Head of CRGH Research & Clinical Development. She completed her MD thesis on Reproductive Immunology at the University of Liverpool. She obtained her Masters in medical ultrasound from Kings College London and specialised in 3D scanning.

Her special interests include Preconceptual care, Reproductive Endocrinology, Reproductive Immunology, Recurrent Implantation failure and Recurrent Miscarriages. She has authored publications in leading medical journals and lectured on the above specialised areas of interest.

Mr Efstathios Theodorou
Consultant Gynaecologist, Specialist in Reproductive Medicine

Mr Efstathios Theodorou is a Consultant Gynaecologist and Specialist in Reproductive Medicine and a Fellow of the RCOG. He completed a fellowship in Reproductive medicine at Imperial College (Hammersmith IVF) and was nominated by the British Fertility Society as a Trainer for pelvic ultrasound and embryo transfer.

He has extensive experience in all aspects of Reproductive Medicine and a specialist interest in fertility preservation, recurrent implantation failure (immunology, endometrial receptivity), genetics (PGS), egg donation, surrogacy, ovulation protocols for poor responders and uterine assessment. He is passionate about evidence based medicine, patient tailored treatment and high quality of care. Formerly Medical Director and Person Responsible to the HFEA at CARE fertility London.

Mr Ali Al Chami
Fertility Consultant

Mr Ali Al Chami is a fertility consultant at the CRGH. Mr Al Chami completed his postgraduate training in obstetrics and gynaecology with special interest in infertility and became a member of the RCOG. He subsequently had 3 years clinical and research fellowship training in assisted conception and reproductive medicine at University College London Hospital.

Mr Al Chami is highly skilled in advanced 3D gynaecological ultrasound scanning, HyCoSy, and hysteroscopy. His special interests include fertility preservation, reproductive medicine surgery, and adjuvant treatments in IVF.  He has published on luteal support in assisted conception, PCOS, and unexplained infertility.

Ms. Montserrat Duran-Retamal
Fertility Consultant - Specialist Gynaecologist & Obstetrician

Ms Montserrat Duran-Retamal achieved the degree of Licentiate in Medicine by the Complutense University of Madrid in 2005 and completed her Specialty Training in Gynaecology and Obstetrics at the University Hospital Mutua Terrassa in Barcelona (2011). She holds an International Master´s Degree in “Human Reproductive Medicine” by the Autonomous University of Barcelona and another International Master´s Degree in “Advanced Medical Skills Specialty: Multidisciplinary Treatment in Gynaecology Oncology and Breast Cancer” by the University of Barcelona (2011-2012). Ms Montserrat Duran-Retamal was granted with several national and international fellowships during her medical and specialty career (Spain, Finland, Italy, UK) and she conducted her last travelling fellowship which was granted from the European Society of Gynaecological Oncology (ESGO) at the University College London Hospital in 2013.

She worked in Spain from 2011-2014 as Consultant Gynaecologist, Obstetrician and in Reproductive Medicine until she moved in UK where she started working at The Centre for Reproductive and Genetic Health in London (UK) in 2015 until present. Her main areas of interest are embryo implantation, fertility preservation, gamete donation and she is actively involved in 2D/3D scanning and minimally invasive fertility procedures. Ms Montserrat can speak five languages: English, Italian, Spanish, Catalonian and French.

Mr Dimitrios Mavrelos
Consultant in Reproductive Medicine

Mr Dimitrios Mavrelos is a consultant in Obstetrics and Gynaecology. He is accredited as a sub specialist in Reproductive Medicine by the Royal College of Obstetricians and Gynaecologists.

Mr Mavrelos studied medicine at the University of Oxford and Guy’s King’s St Thomas’ School of Medicine. He undertook an MD in gynaecological ultrasound and has published several scientific articles and book chapters on the diagnosis and management of endometriosis, the diagnosis and management of early pregnancy complications and the impact of gynaecological disorders on assisted conception techniques.

Mr Mavrelos is an expert in assisting couples to conceive and managing gynaecological disorders in women wanting to preserve and enhance their fertility.

Miss Ephia Yasmin
Consultant Gynaecologist and sub-specialist in Reproductive Medicine and Surgery

Miss Ephia Yasmin is a consultant Obstetrician and Gynaecologist and clinical lead of the Reproductive Medicine Unit at University College London Hospital (UCLH). She is an honorary senior clinical lecturer at University College London. She has an MD from the University of Leeds on polycystic ovary syndrome. She has acquired her wide experience and expertise in fertility treatments from some of the leading centres in the country in Leeds, London and Bristol.

Her special interests are management of rare uterine and genital abnormalities, reproductive endocrinology, fertility preservation and reproductive surgery. She has published in peer reviewed journals and contributed chapters on her special interest topics. She runs an annual laparoscopy and hysteroscopy teaching course for junior doctors at UCLH. She lectures regularly at national and international medical conferences.

Ms Shirin Khanjani
Consultant Gynaecologist and sub-specialist in Reproductive Medicine and Surgery

Ms Shirin Khanjani is a consultant Gynaecologist and accredited subspecialist in Reproductive Medicine at University College London Hospital. Miss Khanjani has trained at Imperial College where she obtained her PhD, was a clinical lecturer and completed sub-specialist training in reproductive medicine. She is passionate about looking after couples who experience conception delays and difficulties. She has a keen interest in management of moderate and severe premenstrual syndrome as well as perimenopausal  and menopausal symptoms. Her research interests are identifying bio markers that will help with successful conception. She has published in peer reviewed journals and book chapters.

Medical Procedures; Ovulation induction, IVF treatment, Pelvic Ultrasound, Hysteroscopic surgery, Coil insertion

Special Interests; Infertility, In Vitro Fertilisation, Fertility preservation, Poor ovarian reserve, Egg donor recipient treatment, Egg freezing, Premenstrual syndrome, menopause

Education; 2005 – MD, Esfahan University of Medical Sciences and Health, 2010 – PhD, Imperial College London, 2014 – MRCOG, Royal College of Obstetricians & Gynaecologists, 2018 – Sub-specialist Accreditation in Reproductive Medicine, Royal College of Obstetricians &  Gynaecologists

Mr Ertan Saridogan
Consultant Gynaecologist at CRGH and The Portland Hospital. NHS Post: University College London Hospitals

Mr Ertan Saridogan is a Consultant in Gynaecology, Reproductive Medicine and Minimal Access Surgery at the University College London Hospitals (UCLH), The Portland Hospital and CRGH. He qualified in 1997 from Hacettepe University, Faculty of Medicine, in Ankara, Turkey.

He is currently the Lead Clinician and Person Responsible for the Reproductive Medicine Unit at the UCLH. His current clinical interests include laparoscopic and hysteroscopic surgery, particularly for patients with subfertility, endometriosis and outpatient hysteroscopy. His research interests include healthy and diseased fallopian tube function, and cellular and biochemical mechanisms in endometriosis associated infertility.

Mr David Ralph
Consultant Urologist

Mr David Ralph is a Consultant Urologist, working both at The Institute of Urology (London) and at the Centre for Reproductive and Genetic Health. He has a wide interest in all aspects of sexual medicine and leads an active research programme with PhD and MD fellows.

He has written many chapters on a range of subjects, including the surgical and medical management of erectile dysfunction and he is the biggest implanter of penile prostheses in the UK

He is an accomplished microsurgeon who established and teaches on the Royal College of Surgeons’ Microsurgery for Andrologists course. In clinical practice his microsurgery skills are of particular benefit to men requiring surgery for fertility problems or vasectomy reversal.

Mrs Daniella Cardenas
Consultant Obstetrician and Gynaecologist. Consultant in IVF and Reproductive Medicine
Dr Vidyalatha Atluri
Fertility Consultant

Dr Vidyalatha Atluri has been a fertility consultant for nearly 10 years with extensive experience in management of infertility.

She had her postgraduate training in obstetrics and gynaecology with special interest in infertility.

She worked in different training hospitals all over Northern Ireland. She is a member of the RCOG since 2005. Her special interests include management of low ovarian reserve and recurrent implantation failures.

She is the co-author of a book titled  ‘Infertility, IVF and Miscarriage’ – A Guide for the General Public (New Revised Second Edition)

Dr Elpiniki Chronopoulou
Consultant Obstetrician and Gynaecologist, Fertility Consultant

Dr Elpiniki Chronopoulou is a consultant Obstetrician and Gynaecologist. She excelled in her medical studies and trained in Obstetrics and Gynaecology with specialist interest in subfertility and reproductive medicine in Greece and in the UK.

She completed her masters in Reproductive Science and Women’s Health at UCL with distinction and MSc prize for academic excellence. She holds a PhD in the field of early placental and fetal development.

She is a member of the Royal College of Obstetricians and Gynaecologists and the British Fertility Society. Dr Chronopoulou is highly skilled in gynaecological and early pregnancy ultrasound. Her special interests include elective oocyte cryopreservation, early pregnancy, preconception care and reproductive endocrinology. She has published on these topics in top medical journals and has presented her work in national and international meetings.

She is passionate about promoting fertility awareness and education and aspires to provide individualized care and support throughout the fertility journey.

Satellite Clinics

Miss Anastasia Goumenou
Fertility Consultant

Mrs Goumenou trained in Greece, London and West Midlands until he was appointed as an NHS consultant in gynaecology and reproductive medicine and surgery at in 2012. She is the lead clinician of fertility services at the East Kent Hospitals University Foundation NHS Trust, and lead doctor for CRGH in Kent.

Her clinical special interests include fertility preservation, gamete donation, reproductive medicine surgery, Reproductive Endocrinology, Recurrent Implantation failure and management of early pregnancy problems, including recurrent miscarriage.

She provides treatments that are individually tailored to each woman with infertility and gynaecological problems.

Mrs Goumenou has a research programme  both in the UK and abroad focusing on endometriosis and she is regularly speaker at national and international conferences.