Medical specialists – Top Doctors UK
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Professional statement

Mr Omar Al Kadhi is a renowned consultant urologist who attends to patients at both Spire Norwich Hospital and Global Clinic Norwich. He is an expert in treating cancer of the bladder and prostate, blood in the urine, lower urinary tract symptoms and urinary tract infections. He is also adept at penoscrotal surgery, with experience in performing circumcision and procedures to treat hydroceles and epididymal cysts.

Since commencing his career in urology, he has performed over a thousand surgical procedures, many of them robot-assisted. He began his current role as a consultant urological surgeon in the NHS at the Norfolk and Norwich University Hospital in 2018 and has the highest caseload for robotic radical cystectomy in Norfolk. He is the Cancer Lead for urology, chairing weekly multidisciplinary meetings on this specialism.

Mr Al Kadhi gained his MBChB qualification from the University of Baghdad, before moving to the UK where he completed his training in urological surgery in the Cambridge and Norwich. He completed his Fellowship of the Royal College of Surgeons of England (FRCS Urol) exams in 2016.

Prior to beginning his consultant career in Norwich, Mr Al Kadhi completed a prestigious 12 month fellowship in robotic urological surgery at University College London Hospital – one of the highest volume centres in the UK for robotic urological cancer surgery, during which time he was able to hone his skills as a minimally invasive cancer surgeon.

His extensive research in his field has been recognised through awards from the National Cancer Research Institute, the British Association of Urological Surgeons, Quadram Institute and the Prostate Cancer Foundation. He received a PhD from his research into prostate cancer from the University of East Anglia in 2017.

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Dr Ravi Ratnavel is a leading consultant dermatologist based on Harley Street, London and in Buckinghamshire. He is renowned for his professional, expert and friendly service. His expertise covers all aspects of dermatology, including skin cancer; hair, skin and nail disorders; acne; difficult rashes; suspicious moles and psoriasis. He also provides a paediatric service for children's rashes and other skin conditions. What's more, he's also highly skilled at performing both surgical and non-surgical skin procedures.

His primary medical education took place at Oxford University, and after his studies, his practical training took place at university hospitals associated with London and Cambridge universities. When it comes to his speciality training in dermatology, Dr Ratnavel has trained at the world-renowned St John's Institute for Dermatology in London. With his first-class training, over 30 years of experience working for the NHS and many years in the private health sector, he has developed expertise that he uses to provide care of the highest quality to all his patients. 

His special interest in skin cancer underpinned his research studies for a doctoral thesis and subsequently was put to clinical use in establishing specialist multi-disciplinary skin cancer services for the Buckinghamshire and Oxford regions, where he acted as the Clinical Lead for several years.

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Dr Claudia Maizen is a consultant paediatric orthopaedic surgeon at Barts Health in London, UK, with a particular focus on the treatment of developmental dysplasia of the hip (DDH) and hip ultrasound screening.

As a founding member of the International Interdisciplinary Consensus Committee for DDH Evaluation (ICODE), she plays a key role as chair of the education committee, contributes to the audit and research committee, and is an active member of the BSCOS DDH steering group. Originally from Austria, Dr Maizen completed her medical degree at Karl Franzens University in Graz. She trained in orthopaedics in Austria before relocating to the UK for advanced training in paediatric orthopaedics and foot and ankle surgery.

In 2010, she was appointed as a consultant at the Royal London Hospital, where she currently serves as the clinical lead for the paediatric neuromuscular service. Dr Maizen is an accomplished academic, having authored numerous papers in peer-reviewed journals and served as Principal Investigator for several multicenter studies. She also contributes as a reviewer and subspecialty editor for respected journals.

Passionate about medical education, she is a faculty member for international courses and organizes the Graf Hip Ultrasound courses in London. In addition to her clinical and academic roles, Dr Maizen is dedicated to humanitarian efforts, providing orthopaedic care to children in Africa and Mongolia, and educating local surgeons. Dr. Maizen’s expertise spans all paediatric orthopaedic conditions, including trauma, hip disorders, foot and ankle problems, and neuromuscular conditions requiring orthopaedic intervention.

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​Dr Oliver Guttmann is the Consultant Cardiologist for Inherited and Inflammatory Cardiovascular Diseases and Interventional Cardiology at St Bartholomew’s Hospital, the Wellington Hospital and Golders Green Outpatients and Diagnostics Centre, all located in London. He is also an Honorary Associate Professor at University College London.

Dr Guttmann sees patients related to all areas of adult cardiology (high blood pressure, high cholesterol and palpitations) for which he has a special interest in chest pain/angina management and coronary intervention, including  angiography and stenting. Dr Guttmann also specialises in inherited cardiac conditions, especially hypertrophic cardiomyopathy and the management of myocarditis.

Dr Guttmann studied medicine at Cambridge University and University College London. Following this, he was awarded both his membership of the Royal College of Physicians and Dr.med qualification from the Ludwig-Maximilians-University in Munich, Germany in 2008.

His research in atrial fibrillation and stroke in hypertrophic cardiomyopathy, which was funded by the British Heart Foundation, gained him his MD (Res) degree from the University College London in 2016. Dr Guttmann completed his cardiology training at the London Chest Hospital, Heart Hospital and Barts Heart Centre in 2017.

He publishes routinely in peer-reviewed journals and book chapters and has written medical articles on inherited inflammatory heart muscle disease, risk stratification in cardiomyopathy and outcomes after percutaneous coronary intervention. He is the Clinical Lead of the Coronary Care Unit at Barts Heart Centre and is a member of the British Cardiovascular Intervention Society and the Working Group on Pericardial and Myocardial Disease of the European Society of Cardiology.

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Mr Harry Powell is a leading consultant ENT surgeon based in London. He currently sees patients at HCA at the Shard and the Cleveland Clinic London Hospital. Mr Powell looks after both children and adults with ENT problems. These include hearing loss, tinnitus, vertigo, ear infections and microtia/atresia.

He carried out the majority of his ENT specialist training at London’s most prestigious hospitals, including The Royal Marsden, The Royal National Throat Nose and Ear Hospital, Great Ormond Street and Guy's and St Thomas'.

Mr Powell was awarded the Graham Fraser Memorial Fellowship and two Royal College of Surgeons grants for advanced surgical training in ear surgery and auditory implantation in Sydney, Australia. He worked there in 2014 and developed his interest in endoscopic ear surgery before returning to London.

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Dr Andy Zamar is an expert consultant psychiatrist and founder of the London Psychiatry Centre. Dr Zamar has special expertise in the treatment and diagnosis of adult ADHD, PTSD (post traumatic stress disorder), anxiety disorders, and adjustment disorders. He has significant experience treating patients with severe trauma, including medical complications, crimes, natural disaster, and terrorist attacks. He is triple qualified in medicine, in Egypt, the UK, and the USA, and is holder of the Gaskell Gold Medal and Prize, one of the most important distinctions in clinical psychiatry.

Dr Zamar will provide opinion regarding the patented treatment of Levothyroxine / Quetiapine rTMS for the treatment of resistant bipolar disorders and treatment resistant mood disorders. The full recovery rate on this protocol is above ninety-six per cent. He has also published a peer reviewed new model for mood disorders involving genetics and molecular biology in their treatment. He is considered a world authority on mood disorders, having been invited to lecture at the World Congress of Psychiatry.

Dr Zamar and his team have introduced several new technologies to the UK, including pioneering rTMS (Repetitive Transcranial Magnetic Stimulation) treatment for depression, and revolutionary treatment for premature ejaculation. He is also multilingual and regularly consults and treats in English, French, Greek, Italian and Arabic.

During an inspection from the Care Quality Commission (CQC), Dr Zamar's clinic, The London Psychiatry Centre, was rated very highly for their treatment of patients, stating that "patients received a number of treatments that were not available in other settings. Patients spoke highly of these treatments following unsuccessful previous treatments with medicines." 

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Dr Micheál (Mike) Taylor is a Consultant Paediatric Neurologist based in Leeds with an NHS practice in Leeds Children’s Hospital, which is one of the largest children’s hospitals in Europe. As a tertiary paediatric neurologist, his NHS practice encompasses a population of 5 million people throughout North, East and West Yorkshire and North-East Lincolnshire and Goole.

Dr Taylor is an expert in paediatric headache disorders with a specialised NHS headache clinic. He has a particular interest in migraine. He will soon be undertaking greater occipital nerve injections through his NHS and private practice. Dr Taylor is also undertaking clinical trials in newer therapies for the pharmacological management of migraine.

Dr Taylor is also an expert in epilepsy, with a particular interest in complex developmental epileptic encephalopathies. He runs the only Dravet Syndrome specific clinic in the UK. Dr Taylor is part of the project management committee of the SCN1A Horizons study.

Dr Taylor also runs a specialised clinic managing neuroinflammatory disorders including multiple sclerosis (MS), MOGAD, neuromyelitis optica, autoimmune encephalitis, and opsoclonus-myoclonus.

As a paediatric neurologist, Dr Taylor’s expertise extends to abnormalities of gait including toe-walking, disorders of muscle and nerve, cerebral palsy, developmental delay, and faints, fits and funny turns.

Dr Taylor also undertakes medicolegal consultations.

Dr Taylor consults privately at Nuffield Health Leeds Hospital.

Dr Taylor read medicine and completed his primary medical qualification (MBBCh BAO) with an intercalated BSc in Anatomy through Queen’s University of Belfast.

During his core paediatric neurology training in Northern Ireland, he undertook placements within paediatric neurology, paediatric neurodisability, community paediatrics, paediatric intensive care, neonatal intensive care, and general paediatrics.

Dr Taylor completed higher specialist paediatric neurology GRID training at Leeds Children’s Hospital. He is a Fellow of the Royal College of Paediatrics and Child Health. Dr Taylor is a member of both the British Paediatric Neurology Association and the European Paediatric Neurology Society.

Dr Taylor is deeply committed to medical education and clinical research. He holds the position of Honorary Senior Lecturer at the University of Leeds and his academic work has been published in various reputable journals. These include the European Journal of Paediatric Neurology, The Lancet Child and Adolescent Health, and Frontiers in Neurology.

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Mr Andrew Gordon is a leading consultant orthopaedic surgeon based in Sheffield, with almost three decades of experience in his specialty. His areas of expertise include hip and knee replacements, revision hip and knee replacements, arthritis, and hip and knee pain.

Mr Gordon currently practises privately at Sheffield Orthopaedics Ltd. He also has extensive experience working within the NHS, currently serving as both the organisation development clinical lead and the clinical lead in the lower limb arthroplasty unit at Sheffield Teaching Hospitals NHS Trust.

Mr Gordon has an impressive educational background, first qualifying with an MbChB from the University of Sheffield in 1997. He went on to complete his surgical training in Sheffield and Nottingham, before being awarded a PhD from the University of Sheffield in 2012. He is also a fellow of the Royal College of Surgeons.

In addition to his clinical work, Mr Gordon is also a respected voice in medical research, having published numerous articles in peer-reviewed scientific journals. He is currently the vice chair of the Dr Foster Global Comparators Group.

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Mr John Stebbing is a consultant surgeon based in Guildford, Surrey. He practises at Nuffield Health Guildford and at Mount Alvernia Hospitals. He specialises in colonoscopy, bowel cancer screening, assessment of abdominal symptoms, piles (haemorrhoids), other anal conditions and hernia surgery.
 
Mr Stebbing started his medical journey at St John’s College, Cambridge, and Guy’s Hospital in London, graduating with distinction in surgery in 1987. He began his surgical career as a senior house office in Guildford, and his training took him through various locations, including the South West Thames Region, Oxford, Gloucester, and Bristol. From 1994-6 he was a Medical Research Council Clinical Training Fellow in Oxford pursuing a period of research which led to him being appointed as Hunterian Professor at the Royal College of Surgeons and being awarded the John of Arderne Medal by the Royal Society of Medicine.
In 1999, he became a consultant surgeon in Guildford and has enjoyed a fulfilling career to date, balancing clinical responsibilities with roles in training, education, and clinical management.
 
A particular focus has been on bowel cancer screening and endoscopy quality. From 2011 to 2017, he chaired the Joint Advisory Group on GI Endoscopy, overseeing accreditation for endoscopy services across the UK and supporting future endoscopists' training.
 
In his current practice, Mr Stebbing serves as the Chief of Service of the Division of Surgery at the Royal Surrey NHS Foundation Trust. Regional roles include being Clinical Director of the Surrey Bowel Cancer Screening Centre and Professional Clinical Advisor to the screening quality assurance service in the South of England. Nationally, he is Chair of the Bowel Screening Clinical Advisory Committee and a member of the Early Detection and Screening Task & Finish Group (NHSE).   Additionally, he has recently demitted having served for seven years as a Trustee of Bowel Cancer UK, emphasising his commitment to advancing colorectal care at various levels.

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Dr Marie White is an experienced consultant general paediatrician based in London. She specialises in a wide range of paediatric conditions, including asthma, reflux, constipation, cow’s milk protein allergy, growth concerns, headache, and urinary tract infections.
 
Dr White graduated from the University of Leeds School of Medicine in 2007. Following this, she further excelled in her studies, receiving a distinction for her Masters in Child Health. After completing her medical studies, she completed her paediatric training in West Yorkshire and London.
 
Dr White's passion for advancing medical knowledge extends beyond clinical practice. The paediatric departmental lead for research, she plays a pivotal role in delivering cutting-edge, evidence-based care to her patients.
 
In addition to her research endeavours, Dr White is deeply invested in medical education. She is actively involved in teaching, serving as an instructor on the Advanced Paediatric Life Support Course. Furthermore, she has volunteered her expertise with the Royal College of Child Health, training medical and nursing staff in Kenya and Myanmar. Her commitment to global health is further demonstrated by her six-month tenure as an acting consultant in Kenya.
 
A distinguished member of the Royal Colleges of Paediatrics and Child Health and the Medical Protection Society, Dr Marie White is dedicated to providing compassionate and expert patient-centred care to her patients

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