Medical specialists – Top Doctors UK
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Professional statement

Mr Nish Mehta is an extensively trained and skilled consultant ears, nose and throat (ENT) surgeon. He has a subspecialty interest in otology (the branch of medicine related to the ear) and auditory implants. He offers leading care for both adult and paediatric patients.

Among his areas of expertise are cochlear implants, hearing loss, cholesteatoma and ear infections. Patients regularly seek him out for his skill in implantation surgery, endoscopic ear surgery and local anaesthetic ear surgery.  In 2018, he achieved his Fellowship of the Royal Colleges of Surgeons (FRCS) qualification in otorhinolaryngology and head and neck surgery. 

Additionally, he contributes to his field through the education of future ENT specialists. He holds a joint appointment as an associate professor at the globally recognised University College London (UCL) ear institute, which is funded by the Deafness and Hearing Health Biomedical Research Centre. He also supervises PhD and MSc students in training at the UCL. What’s more, his proficiency and understanding of otology have led him to become chairman of the INTEGRATE (UK National ENT research trainee network) otology committee.

Mr Nish Mehta is also an avid researcher. His latest scientific medical research explores the use of artificial intelligence in hearing loss, with the goal to improve outcomes for cochlear implantation, sudden onset hearing loss and ototoxicity (drug-related hearing loss).

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Mr Antonio Manzelli is an extensively trained and highly skilled consultant general surgeon in Exeter with more than 15 years of professional expertise. His main surgical interests consist of upper GI (gastrointestinal) surgery and HPB (hepato-pancreatico-biliary) surgery.

He has gained experience in all common open and advanced laparoscopic procedures as well as vascular surgical procedures.  He also performs upper GI (gastrointestinal) endoscopy and surgery for gallstones, bile ducts, hernias, liver conditions and splenic cysts, pancreatic pseudocysts, stomach GISTs (gastrointestinal stromal tumours), spleen issues and conditions of the small bowel.

Mr Manzelli qualified with a PhD in Robotics at Tor Vergata University of Rome, a PhD in HPB at the University of Verona and an MSc in Day Surgery at the University of Venice. Later in his training, he specialized in the US with a fellowship in trauma at UPMC in Pittsburgh and a fellowship in abdominal organ transplantation at UIC in Chicago.

He worked as a consultant surgeon at Tor Vergata University of Rome Hospital before moving to the UK for a Fellowship in HPB at UOH in Oxford. In 2011, Mr Manzelli was appointed as a consultant hepatobiliary and pancreatic surgeon at the Royal Devon and Exeter NHS Foundation Trust in 2011.

Private patients can access his first-rate surgical care in acclaimed clinics at the of Nuffield Health Exeter Hospital and the private patients' ward of the Royal Devon and Exeter Hospital.

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Mr Aniruddha Gayen is a highly experienced consultant gynaecologist based in Brighton, Haywards Heath and Hove. He is renowned for his expertise in vaginal prolapse, pelvic floor, menstrual disorders, and urinary incontinence, and also specialises in colposcopy and urogynaecology.

Mr Gayen qualified in medicine in 1994 before going on to pursue further training in obstetrics and gynaecology. He has previously served as a consultant gynaecologist and urogynaecologist at various NHS hospitals, including the Royal Bournemouth Hospital. Now based at Brighton and Sussex University Hospitals NHS Trust, he leads the dedicated colposcopy service, performing between 600 and 700 colposcopy procedures yearly. Mr Gayen is accredited by the British Society of Colposcopy and Cervical Pathology and is also an appointed fellow of the Royal College of Obstetricians and Gynaecologists. He sees private patients at Nuffield Health Brighton Hospital, Nuffield Health Haywards Heath Hospital and Spire Montefiore Hospital.

Mr Gayen has presented at a number of key conferences throughout his esteemed career, including at the Royal College of Obstetricians and Gynaecologists’ World Congress in London in 2019 and 2021. He has also published academic papers and research on various topics within his areas of expertise, including stress incontinence and sacrospinous fixation performed with prolapse and hysterectomy procedures. Mr Gayen is a member of several professional bodies, including the British Society of Urogynaecology and the International Urogynaecological Association.

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Professor Richard E. Field is a world-renowned hip and knee surgeon with practices in both the NHS and Private sectors. He is the Professor of Orthopaedic Surgery at St George’s University of London.  He was appointed on the staff of St Helier Hospital, Surrey in 1994 where his NHS practice was based until the South West London Elective Orthopaedic Centre (SWLEOC) opened in 2004. He has been SWLEOC's Director of Research since the centre opened and leads the centre's academic surgical team. His private practices are based at the Lister Hospital in Chelsea and St Anthony’s Hospital in Cheam.

Professor Richard Field qualified from the Westminster Hospital in 1980.  His PhD was undertaken at Cambridge University, on the design of a hip resurfacing implant. He has been actively involved in the design and evaluation of new hip and knee designs throughout his career. Professor Field has undertaken many world-first operations. His pioneering work in arthroscopic hip surgery was recognised by his Presidency of ISHA, the International Society for Hip Preservation Surgery in 2016-17.

Professor Field has been undertaking hip resurfacing since 1995 and adopted the muscle sparing, Direct Anterior Approach (DAA) for hip replacement in 2008. He is the UK's most experienced surgeon in DAA hip replacement.  

Professor Field has built up one of the world’s largest and most comprehensive databases on the outcome of hip and knee replacement and has published extensively on hip preservation and joint replacement surgery. He was an advisor on Hip replacement to the National Institute of Clinical Excellence (NICE), a board member of the British Hip Society and President of ISHA, the International Society for Hip Preservation Surgery. He continues to teach and lecture, in the UK and abroad, on hip and knee surgery.

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Dr Kristo Papa is a leading cardiothoracic surgeon who is based in London. He currently sees patients at Papà Medical Clinic.

Dr Papa treats heart disease as well as lung and chest issues. He carries out medical procedures such as heart and lung transplants, repair of aortic aneurysm and artificial heart valve surgery.

Dr Papa gained his master's degree in medicine at University of Geneva in Switzerland and his doctorate of medicine at University of L' Aquila in Italy. He's also written in various internationally recognised journals and publications.

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Dr Robin Roberts is a leading cardiologist on Harley Street, London who has a particular interest in the management of difficult angina, heart failure, women’s cardiovascular health and the impact of mental health on the heart.

Dr Roberts qualified from Westminster Medical School, University of London in 1982. He completed cardiology training at Guy's Hospital, the London Chest Hospital and the National Heart and Lung Instiute, where he was a British Heart Foundation research fellow. He held an NHS Consultant post Queen Marys Hospital Roehampton and The Royal Brompton Hospital from 1997 until 2006, before moving into full-time private practice.

Dr Roberts had had a broad training in general medicine and cardiology, both invasive and non invasive.  He has a particular interest in chronic, refractory angina and in the management of individuals with ongoing cardiac symptoms, despite having normal coronary arteries. Many such cases have underlying microvascular dysfunction (microvascular angina). He also works closely with colleagues at the London Psychiatry Centre, providing support to patients with mental health problems, for whom the risk of developing cardiac disease is much higher than in the general population.

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Dr Alexander Hobson is a highly esteemed, leading consultant interventional cardiologist with over 20 years of expertise and a subspeciality interest in interventional cardiology. His main areas of expertise include heart failure, coronary angioplasty, angina, arrhythmia, palpitations, and shortness of breath. 

Dr Hobson, who currently practises at both the Spire Portsmouth Hospital and the Queen Alexandra Hospital Private Patients Unit in Portsmouth, is highly skilled in numerous procedures, including angioplasty. Impressively, he is also the current cardiology clinical director of Queen Alexandra Hospital NHS Trust, Portsmouth as well as the chairman of the South Coast Intervention Group. 

Dr Hobson also dedicates his career to research. He has authored and co-authored 20 peer-reviewed scientific publications and has research interests of coronary stents, antiplatelet therapies, treating high cholesterol and more. Furthermore, he has written book chapters in the Oxford Textbook of Interventional Cardiology and in "Management of Cardiovascular Conditions in Adults in Critical Care".

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Dr Robert Boyle is a leading paediatric allergy specialist in one of the largest paediatric allergy clinics in the UK. He specialises in eczema, asthma, food allergy, anaphylactic allergy and immunotherapy. He does not work with adults but children only. 

Dividing his time between his Harley Street Clinic and St. Mary's Hospital, he is also active in researching the area of allergy in children and has published numerous studies on the subject. Dr Boyle also contributes as editor, writing on the subject of childhood allergy, and lectures widely.

Dr Boyle has an active research programme at Imperial College London, where he is able to access the latest in allergy tests for his patients to help them make a clear diagnosis.

He also uses the latest developments in specific allergy treatments such as immunotherapy and targeted allergen avoidance.

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Mr Gianluca Bonanomi is a senior consultant surgeon based in London who specialises in general, upper gastrointestinal and bariatric surgery. He has a special expertise in minimally invasive keyhole surgery techniques including laparoscopic surgery for inguinal hernia, gallbladder disease, acid reflux, obesity and upper gastrointestinal conditions.

Mr Gianluca Bonanomi completed his medical education and general surgery training at the University of Pisa in Italy and subsequently undertook further specialist surgical training in the United States, United Kingdom and France. He completed a research fellowship in minimally invasive and robotic surgery and a clinical fellowship in advanced laparoscopic surgery and bariatrics at the University of Pittsburgh Medical Center in the US where he was appointed as attending and assistant professor of surgery. He has achieved extensive experience in metabolic and bariatric surgery and offers all types of treatment including endoscopic intragastric balloon placement, laparoscopic gastric banding, gastric bypass, sleeve gastrectomy and revisional procedures.

He has been the clinical lead for the Bariatric and Metabolic Surgery Service at Chelsea and Westminster Hospital in London, where he received several clinical excellence awards for his role and for working towards the establishment of a recognised multidisciplinary referral centre. He is also Honorary Clinical Senior Lecturer at Imperial College London.

He will provide you with an informed, experienced and honest account of the options, risks and benefits of advanced laparoscopic surgery applied to common surgical conditions such as inguinal hernia, gallbladder stones, acid reflux, obesity and upper gastrointestinal diseases.

Mr Bonanomi currently holds professional memberships at the Royal College of Surgeons (FRCS), Association of Upper Gastrointestinal Surgeons (AUGIS), British Medical Association (BMA), British Obesity and Metabolic Surgery Society (BOMSS), International Federation for the Surgery of Obesity (IFSO) and Medical Protection Society (MPS). Former member of the American Society of Metabolic and Bariatric Surgery (ASMBS) and the European Association of Endoscopic Surgery (EAES).

His research interests have included minimally invasive surgical techniques, robotics applications in surgery and the metabolic implications of obesity.

He is fluent in English, French, Italian and Spanish.

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Dr Khaled Helmy is an esteemed consultant psychiatrist with over 25 years of extensive experience in mental health services. For over a decade, he has successfully operated his private outpatient clinic in London, catering to both local and international clientele. Specialising in a range of mental health disorders including ADHD, depression, anxiety, PTSD, OCD and substance addiction, Dr Khaled demonstrates a keen interest in addressing the complexities of dual diagnosis cases, particularly in adults.

Adopting a holistic approach to treatment, Dr Khaled integrates medical and psychological therapies alongside evidence-based practices to ensure optimal patient outcomes. He prioritises individual patient needs and preferences, ensuring a tailored and efficient treatment experience.

Dr Khaled completed his medical training in 1998, earning both an MSc and MD in Psychiatry in 2009. A member of the Royal College of Psychiatrists since 2013, he has also been recognised as an ambassador and international fellow by both the American Psychiatric Association and the International Society of Addiction Medicine.

In addition to overseeing his international outpatient treatment company, Ciconia Recovery, Dr Khaled actively contributes to the field through participation in international conferences and the publication of research articles on mental health and substance misuse. Employing a person-centred and empathetic approach, Dr Khaled develops comprehensive treatment plans tailored to the unique needs of each patient.

He strongly advocates for patient collaboration, empowering individuals to actively participate in decision-making regarding their care, including considerations for medication when appropriate. Driven by a steadfast dedication to helping individuals reach their life aspirations, Dr Khaled stands out for his ability to craft personalised and impactful treatment plans. Harnessing both his innate warmth and vast clinical knowledge, he consistently cultivates an environment conducive to achieving positive patient outcomes.

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