Medical specialists – Top Doctors UK
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Professional statement

Dr Ahmed Elghamaz is highly respected consultant cardiologist based in London. He specialises in the assessment and treatment of palpitations, breathlessness and high blood pressure and is also renowned for his expertise in complex coronary intervention, stress echocardiogram and coronary artery disease.

Dr Elghamaz qualified in medicine at Ain Shams University, Egypt in 1996 before relocating the the UK to pursue further training, including an honorary research fellowship at Brighton and Sussex University Hospitals. He completed his specialist training in cardiology and coronary intervention in London and was then appointed as a consultant cardiologist at Northwick Park Hospital. Dr Elghamaz is now clinical lead for coronary intervention at the hospital and is renowned for his numerous innovative contributions which have advanced the site’s cardiology service. He sees private patients at both The London Clinic and Northwick Park Hospital.

Additional to his clinical responsibilities, Dr Elghamaz is head of interventional research at Northwick Park Hospital and is highly esteemed in the field of cardiology research. He has developed and established into practice a number of advanced techniques, including a novel approach to the assessment of fractional flow reserve and additionally has several patents for pioneering technology.

Dr Elghamaz is widely regarded as a leading expert in his field and is regularly invited to speak at key national and international meetings. His numerous publications feature in peer-reviewed journals and he is a member of many professional bodies, including the British Cardiac Society and the European Association of Percutaneous Coronary Intervention. As a distinguished name in cardiology, he also holds positions including membership of the European Society of Cardiology’s acute cardiac care working group and is co-founder of the South of England Chronic Total Occlusion Club (SECTO).

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Mr Paul Tulley is an exceptionally experienced and esteemed consultant plastic, reconstructive and cosmetic surgeon based in London, currently principally practicing on Harley Street. He is well-versed in all aspects of plastic surgery, specialising in a diverse array of procedures, such as facelifts, breast augmentation and rhinoplasty. He has a specialist medical interest in cosmetic surgery, breast reconstruction as well as facial palsy and facial palsy surgery. 

A graduate of Charing Cross and Westminster Medical School, Mr Tulley was later awarded his MD for his research with regards to the use of gene therapy to treat malignant melanoma. Ever keen to expand his expertise, he later undertook fellowships in microsurgical reconstruction in Taipei and Toronto, and underwent further training in the USA. Now, he is one of London's leading plastic surgeons, practising both privately and with the NHS.

Mr Tulley, who prides himself on consistently excellent patient outcomes and impressive clinical results, has worked and trained with highly revered, leading aesthetic surgeons around the world, gaining an impressive level of experience and expertise. He undertook fellowships in Taiwan, Taipei as well as Toronto, and also gained further cosmetic surgery experience in the USA and the UK. He is currently a member of well-established and highly regarded leading plastic surgery associations such as the British Association of Aesthetic Plastic Surgeons (BAAPS) as well as the American Society of Plastic Surgeons (SPS). 

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Mr Mike Thilagarajah is a consultant trauma and orthopaedic surgeon working in the London and West Kent areas and specialising in disorders of the lower limbs, including hip replacement, knee replacement, ankle surgery, bunion surgery, ankle arthroscopy, and keyhole knee surgery/meniscus surgery. He takes a holistic approach to the lower limb, understanding the interactions between the major joints of the leg, enabling him to make thorough assessments. 

Mr Thilagarajah graduated from medical school in London and spent his grounding years training in surgical specialties in hospitals in and around London. He has spent many years caring for patients in the NHS and honed his surgical skills in orthopaedics to provide the best outcomes for his patients.  

His passion for ensuring patients get optimal care led him to be involved in various innovations. As a result, he was awarded several NHS excellence awards for his roles as trauma lead, fractured hip lead, and college tutor for orthopaedics at his NHS base; roles which he held for over ten years. During that time, he transformed the quality of service provided for hip fracture patients and continues to advocate for this vulnerable, at-risk group. He is the foot and ankle lead, overseeing the expansion of the service in his NHS hospital. 

Whether it is a joint replacement or a sports injury, Mr Thilagarajah is trained to take on procedures from his wide-ranging repertoire, from simple to highly complex. In addition, he remains up to date on newer techniques within his sub-specialties, providing his patients with the best care and advice, most appropriate for their individual needs. He places communication high on his agenda and does his utmost to ensure his patients understand their diagnoses and options, to enable them to make informed decisions. 

Mr Thilagarajah is also dedicated to training future surgeons. He regularly teaches on surgical skills courses with the Royal College of Surgeons. He has very high standards and is dedicated to instilling the best values in the trainee surgeons working with him, which they can carry into their careers.

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Dr Saagar Mahida is a consultant cardiologist and cardiac electrophysiologist whose private practice is based in Liverpool and Manchester. He specialises in treatment of heart rhythm disturbances (arrhythmia), including atrial fibrillation, heart palpitations, ectopic beats, supraventricular tachycardia, and ventricular tachycardia. 

Dr Mahida specialised in management of heart rhythm abnormalities at a number of the best centres in the world, including Brigham and Women's Hospital, a teaching hospital of Harvard Medical School and Hospital Haut Leveque, Bordeaux where the first curative catheter ablation for atrial fibrillation worldwide was performed. He spent three years in the Harvard system in Boston working with world-leading heart rhythm experts. He has since established himself as a leading UK heart rhythm specialist and atrial fibrillation specialist. 

Detailed information on Dr Mahida’s areas of expertise can be found at www.drsaagarmahida.co.uk

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Mr Marius Calciu is a leading consultant knee surgeon based in Cardiff who specialises in knee replacements, soft tissue ACL reconstruction and meniscus repair, alongside osteotomy, sports injuries and knee arthroscopy. He privately practises at Spire Cardiff Hospital, while his NHS base is the Cardiff and Vale University Health Board. 

Mr Calciu is highly experienced and qualified, and to date has performed over 820 partial and total knee replacements, more than 400 knee arthroscopic procedures (meniscectomy, meniscus repair and ACL reconstruction) and 76 osteotomies around the knee (high tibial osteotomy, distal femoral osteotomy, tibial tubercle transfer).

Furthermore, he's recently performed new and more challenging procedures, for example meniscus root repairs and derotational osteotomies. His revision rate as per National Joint Registry feedback confirms a five-year revision rate of 0.66 per cent for partial and total knee replacement. 

Mr Calciu's practice involves the assessment and management of all aspects of knee surgery, with a high volume practice in partial and total replacement. He strongly believes in a personalised treatment of the knee, based on patient's personal characteristics, activity levels and goals.

Mr Calciu's research has been published in various peer reviewed journals. He's a member of several professional organisations including the Royal College of Surgeons of England, the European Society of Sports Traumatology, Knee Surgery and Arthroscopy (ESSKA) and the International Cartilage Regeneration and Joint Preservation Society (ICRS). He's also a member of the International Society of Orthopaedic Surgery and Traumatology (SICOT).

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Mr Mfazo Hove is a highly skilled ophthalmic surgeon in London and Essex, specialising in intraocular and refractive surgical procedures including LASIK, LASEK, implantable ICL, and refractive lens exchange. He is the founder and director of his own eye clinic, Blue Fin Vision Clinic, which has four locations across London and one in Essex.

Mr Hove graduated with a first-class degree from the University of Liverpool in 2002, and his ophthalmology career began as a Senior House Officer in Eastbourne, before moving to St Thomas' Foundation University Hospital for further training. After receiving his MRCOphth, he spent two years at Moorfields Eye Hospital as a cataract research fellow, where his research on multifocal lenses earned him an MD. 

Mr Hove completed his registrar training on the prestigious North Thames Ophthalmology rotation, including Moorfields Eye Hospital, and later obtained his FRCOphth, CCT, and a position on the specialist register. His fellowship training at Moorfields Eye Hospital covered medical retina, cataracts, and eye casualty, and also held a locum consultant role at the hospital. In 2022, Mr Hove transitioned to full-time private practice after serving as a Consultant and Lead for Eye Casualty at Western Eye Hospital, part of Imperial College Hospital.

Mr Hove is also a Spamedica Clinical Supervisor, dedicating part of his time to training future ophthalmologists. With a certificate in laser and refractive surgery (CertLRS) obtained in 2017, Mr Hove is well-versed in LASIK, LASEK, implantable ICL, natural lens replacement (refractive lens exchange), and intraocular lens exchanges. 

Throughout his career, Mr Hove has performed over 40,000 intraocular and refractive procedures, including more than 20,000 in the past three years.

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Mr Loaie Maraqa is a highly skilled consultant oncoplastic breast surgeon based in Sheffield. With more than 20 years of experience, Mr Maraqa’s clinical practice is exclusively dedicated to breast surgery for benign and malignant breast conditions, such as breast lumps and breast cancer. Included in his expertise are lumpectomy, mastectomy, therapeutic mammoplasty (breast reduction to treat breast cancer), and breast reconstruction procedures alongside revision breast surgery, lipomodelling (fat transfer), and breast symmetrisation surgery.

Mr Maraqa originally qualified from the Jordan University of Science and Technology in 1999. Following his initial appointments, Mr Maraqa became a member of The Royal College of Physicians and Surgeons of Glasgow in 2005 and was named a fellow only seven years later. Mr Maraqa took up his NHS post in 2015 at The Royal Hallamshire Hospital, where in addition to his regular consultant duties, he leads the hospital's breast multidisciplinary team meetings and is governance lead for the breast services as well.

Further to his surgical practice, Mr Maraqa is actively involved in breast cancer research, statistics, and critical appraisal. He holds an MD from the University of Leeds for his investigation into the genes associated with tamoxifen resistance in breast cancer, and is a peer-reviewer for several scientific publications, including the British Medical Journal. Mr Maraqa is also an honorary senior clinical lecturer at the University of Sheffield.

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Miss Rakhee Nayar is a highly skilled consultant plastic surgeon with a specialisation in Mohs surgery, located in St Helens. With a broad spectrum of expertise, she is renowned for her proficiency in Mohs microsurgery, skin cancer treatment, facial reconstruction, addressing skin lesions, and tackling skin cancer, particularly on the face, including basal cell carcinoma.
 
Miss Nayar commenced her medical studies at the University of Liverpool, graduating with an MBChB with Honors in 2004. She chose to undertake further studies due to her interest in cancer, obtaining an MD from the School of Cancer Studies at the same university in 2015. Furthermore, she was awarded an MRCS from the Royal College of Surgeons of Edinburgh in 2008.
 
In addition to her clinical roles, Miss Nayar is actively engaged in teaching and research. She serves as a teacher and trainer for junior doctors and surgeons within the NHS. Her contributions to the academic community extend beyond her teaching roles, as she has been widely published and presented her research at both national and international levels.
 
Furthermore, Miss Nayar is actively involved in public organisations, holding the position of National Chairwoman for Mohs training within the Trainee Interface Group (TIG). She is also a proud member of esteemed organisations such as the Royal College of Surgeons of Edinburgh and the British Association of Plastic, Reconstructive, Aesthetic Surgeons (BAPRAS).

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Dr Shivan Sivakumar is an esteemed senior medical oncologist at The London Clinic. His expertise includes treating pancreatic cancer, liver cancer, and cholangiocarcinoma (bile duct cancer) with chemotherapy and immunotherapy. Dr Sivakumar is dedicated to finding new solutions for challenging diseases and has led numerous clinical trials and investigative studies.
 
Known for the quality of his patient care and his prompt responsiveness, Dr Sivakumar tailors’ treatment plans to individual needs and offers home-based chemotherapy treatments.
 
Dr Sivakumar holds an honorary consultant position in medical oncology at Oxford University Hospitals NHS Foundation Trust and is a clinical career development fellow in medical oncology at the University of Oxford. He also serves as the pancreatic cancer lead for the Sichuan University (West China Hospital)-Oxford University Gastrointestinal Cancer Centre, an international collaboration aimed at improving cancer treatment.
 
He graduated from Queen Mary University of London with a Bachelor of Medicine, Bachelor of Surgery degree, and became a member of the Royal College of Surgeons. In 2014, he earned a PhD in Biochemistry from the University of Cambridge. He completed post-doctoral studies in immunology and training in early phase clinical trials at the University of Oxford.
 
Currently, Dr Sivakumar is an honorary consultant in Medical Oncology at the University Hospitals Birmingham NHS Foundation Trust. He previously served as a clinical career development fellow and honorary consultant at Oxford University Hospitals NHS Trust, and his clinical training includes experience in Leeds, Wales, and Oxford.
 
As a research-active oncologist, Dr Sivakumar focuses on improving survival rates for patients with pancreatic cancer. His work includes early diagnosis, conducting clinical trials, and identifying new therapeutic targets through studying the biology of the disease.
 
Dr Sivakumar chose Birmingham for its strong clinical expertise in pancreatic cancer, robust academic immunology program, and excellent access to patient samples. He treats patients with pancreatic, liver, and biliary tract cancers (HPB cancers) and oversees an active trials program in these areas. He is part of one of Europe’s largest oncology clinical practices for HPB cancers at Queen Elizabeth Hospital, which sees nearly 500 new patients annually.
 
Dr Sivakumar has secured several million pounds in funding from public, private, and charitable sources. His strong connections with the pharmaceutical industry have led to a significant collaboration with Bristol Myers Squibb in pancreatic cancer research. He serves on several national committees and has received the 2020 NCRI Future of Research Award and the 2023 Royal College of Physicians Linacre Lectureship.
 
Dr Sivakumar continues to conduct research, with his findings published in numerous peer-reviewed journals. He is committed to advancing cancer treatment and improving patient care through his ongoing research and clinical work.

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Mr Nimalan Arumainayagam is highly respected consultant urological surgeon in Woking, Chertsey, Windsor and west London. He is renowned for his expertise in prostate cancer diagnosis and benign prostate enlargement and also specialises in kidney stones, recurrent urinary tract infections, erectile dysfunction and haematuria (blood in the urine).

After qualifying in medicine from the University of Nottingham in 2000, Mr Arumainayagam underwent further training in London and Bristol. He was awarded a clinical research fellowship based at University College London Hospitals, where he formed part of a research group on minimally invasive treatment of prostate cancer. He additionally completed subspecialist training in stone surgery at Charing Cross Hospital and obtained an MD in multiparametric magnetic resonance imaging in the diagnosis of prostate cancer from University College London. He achieved the fellowship of the Royal College of Surgeons’ urology section in 2014 and was appointed as a consultant urological surgeon at Ashford and St. Peter’s Hospitals NHS Foundation Trust the following year. Offering expert care for a wide range of urological conditions, including innovative treatments for benign prostate enlargement, Mr Arumainayagam sees private patients at Nuffield Health Woking Hospital, Runnymede Hospital, GenesisCare Woking and the Syon Clinic.

Throughout his esteemed career, Mr Arumainayagam has held a number of senior positions and is currently clinical lead in the department of urology and lead cancer clinician within his NHS base. At the forefront of research in his field, he has also acted as principal investigator on a number of key clinical trials and his academic papers appear in peer reviewed journals. He is a regular speaker at important conferences of fellow urologists and has won awards throughout his career, including being the senior supervising author for the winning presentation of the Royal Society of Medicine’s Geoffrey Chisholm Communication Prize in 2018.

Additional to his clinical and research responsibilities, Mr Arumainayagam is an important figure in medical education in his role as foundation training programme director within his NHS base. He was awarded postgraduate certification in medical education from University College London in 2009 and a diploma in surgical education from Imperial College London, as well as an executive MBA with distinction from the University of Warwick in 2021. Mr Arumainayagam is also a member of the British Association of Urological Surgeons.

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