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Dr Daniel Sado

Dr Daniel Sado

1.80 miles

Dr Daniel Sado

1.80 miles
Expert in: Cardiology
17 years of experience
General Medicine, Heart Muscle Disease/Cardiomyopathy

Dr Sado is a Cardiology Consultant and the lead of the cardiovascular magnetic resonance imaging service at King’s College Hospital. As well as general clinical cardiology, he has particular interests in heart failure, heart imaging, heart disease in patients with cancer (cardio-oncology) and inherited heart diseases.

Dr Sado has a strong involvement in medical education, and is a national, regional and local leader for cardiology education, working as training programme director for South Thames Cardiology trainees and sitting on British Cardiac Society, Royal Society of Medicine and the Nationalist Specialist Advisory Committee in Cardiology. He was the first Chair of the British Society of Cardiovascular Magnetic Resonance (BSCMR) Training Committee, and he organises and leads the London registrar training days in cardiovascular imaging. He provides cardiology training to consultants, junior doctors, students and allied health professionals.

He has won several international, national and regional prizes for his ongoing research and has published over 80 articles in the peer-reviewed medical literature.

He is frequently invited to lecture and chair sessions at national and international conferences, and is leading on the redesign of the UK national heart failure training curriculum.

Dr Sado provides services built on a number of important values including integrity, honesty, openness, empathy and understanding. Using these and other skills, his overall aim is to strive to provide the highest possible quality of clinical care, research, teaching, leadership and management in healthcare.

Diseases, Medical Tests and Treatments
  • Cardiac magnetic resonance scan (cardiac MRI)
  • General cardiology
  • Heart failure
  • High blood pressure
  • Chest pain
  • Heart imaging
  • Cardiac magnetic resonance imaging (MRI)
  • Heart disease in patients with cancer (cardio-oncology)
  • Inherited heart diseases
  • Adult congenital heart disease
  • Resuscitation
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Expert in: Cardiology
21 years of experience

Dr Paramdeep Dhillon is a Consultant Cardiologist at King’s College Hospital NHS Trust, with Specialties and Sub-Specialties in Cardiac care and Heart rhythm. He has an interest in all forms of arrhythmia management, in particular ablation of arrhythmias and implantation of pacemakers and defibrillators. He was appointed as Consultant Cardiologist in 2015 in order to further development in his clinical and academic field. He undertook his training at St Mary’s Hospital and St George’s Hospital before being appointed as Consultant Cardiologist at Ashford and St Peter’s NHS Trust and St George’s NHS Trust in 2013.

Dr Dhillon qualified from St Bartholomew’s Medical School, London, in 1998, previously gaining a first-class intercalated BSc in Biochemistry in 1994 at Queen Mary and Westfield College, London. He was awarded a British Heart Foundation Clinical PhD Research Fellowship in 2004 to investigate Atrial Fibrillation and Hypertrophic Cardiomyopathy at both Imperial College London and University College London. He presented his research at international conferences including as a finalist at The British Cardiovascular Society Young Investigator Competition and has published his research in several scientific journals. 

Diseases, Medical Tests and Treatments
  • Arrhythmia implantation of pacemakers and defibrillators
  • Ablation
  • ICD
  • CRT
  • Pacemaker
  • Palpitations
  • Arrhythmia
  • Atrial fibrillation
  • SVT
  • Hypertension
  • Chest pain
  • Blackout
  • Faints
  • Dizziness
  • Syncope
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Expert in: Cardiology
27 years of experience
Electrophysiology, Interventional Cardiology

Dr Julian Collinson studied medicine at King’s College London and graduated in 1992. He then completed his general training in Manchester.

Following this, he specialised his training in cardiology at the Royal Brompton & Harefield NHS Foundation Trust. In 2000, he was awarded his Doctor of Medicine (MD) from Imperial College London for his medical research into the epidemiology and management of acute coronary syndromes.

Currently Dr Collinson is a consultant cardiologist based at Chelsea and Westminster Hospital. He previously was clinical lead for cardiology and is now clinical director for medical specialities.

Dr Collinson is available to treat private patients at Royal Brompton & Harefield Hospitals Specialist Care. 

Diseases, Medical Tests and Treatments

  • Angioplasty
  • Inserting stents and pacemakers
  • Angina
  • Cardiac risk factors



  • Interventional cardiology (angioplasty and stent insertion)
  • Implantation of pacemakers, including biventricular devices
  • Defibrillators in the treatment of heart failure and sudden death syndrome
  • Angina and cardiac risk factors
  • Valvular heart disease
  • Echocardiography.


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Expert in: Cardiology
Recommended by 22 specialists
30 years of experience

Professor Melvin Lobo is a senior Consultant Cardiovascular Physician based in the Bart's Heart Centre and the William Harvey Research Institute. He has a specialist interest in blood pressure disorders of all types, autonomic control of the circulation and also resistant hypertension and device-based therapies thereof. He is an accredited Clinical Hypertension Specialist of the European Society of Hypertension (ESH) and British Hypertension Society.

Professor Lobo is Director of the Bart's Blood Pressure Clinic which is a Hypertension Centre of Excellence and receives referrals of patients with complex circulatory disorders on a national/international basis and has contributed to several landmark studies in hypertension, particularly in the field of novel device therapy of hypertension. His research work has been featured on television and in the national press on numerous occasions.

In addition to hypertension, he is also an acknowledged expert in the management of low blood pressure (hypotension) and BP variability disorders and PoTS (postural tachycardia syndrome) and sees patients on a national basis with these issues in the Barts BP Clinic and on an international basis in his private practice. He has recently co-written and co-edited the Textbook of PoTS which was published in October 2020. He has the largest cohort of medication intolerant patients nationally and has evolved, published and lectured on specialised strategies with liquid and patch formulations of antihypertensives to get around intolerances to tablets.

He is recognised globally as a key opinion leader in his field and this is reflected in numerous roles in multicentre clinical trials, invited lectures at major conferences and also as an editor/reviewer of numerous journals including JACC and Lancet. More recently he has authored national and co-authored international guidelines for device therapy of hypertension which were published in the prestigious European Heart Journal.

Professor Lobo organises and co-chairs the UK Annual Symposia on Device Therapy of Hypertension with a distinguished panel of international authorities in hypertension medicine. He is a specialist adviser to NICE and the European Society of Hypertension on interventional therapies in hypertension and a member of the Council on Hypertension of the European Society of Cardiology.

Diseases, Medical Tests and Treatments
  • Device-based Therapy for Hypertension
  • Autonomic Function Testing
  • Tilt Table test
  • COVID-19 - Rehabilitation and Recovery
  • High Blood Pressure (Hypertension)
  • Low Blood Pressure (Hypotension)
  • Blood Pressure Disorders
  • PoTS - postural tachycardia syndrome
  • Long COVID and allied dysautonomia
  • COVID-19 - Rehabilitation and Recovery
  • Antihypertensive Medication Intolerance
  • Device Therapy of Hypertension
  • Dysautonomia
  • Post prandial hypotension
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Expert in: Cardiology
Recommended by 8 specialists
21 years of experience
Heart Muscle Disease/Cardiomyopathy, Interventional Cardiology

Dr Ravi Assomull is the Clinical Lead for cardiac outpatients at Imperial College NHS Trust, practising as an Interventional Cardiologist in hospitals of London North West Healthcare NHS Trust. His area of expertise is in cardiovascular risk prevention and advanced cardiovascular imaging (cardiac CT and MRI), often using advanced cardiac imaging (Cardiac CT and MRI) to provide detailed imaging of the heart to effectively guide subsequent invasive procedures (e.g., angioplasty). 


Dr Assomull completed his medical training at The University of Cambridge, qualifying in 1999 and was awarded the British Heart Foundation Junior Fellowship, enabling him to fund his MD research degree at The Cardiac MRI Unit of the Royal Brompton Hospital, London. He completed his specialist Cardiology training in North West London where he was awarded the prestigious Imperial College Interventional Fellowship two years in succession. 


Dr Assomull stays up to date with the most appropriate investigations, providing a tailored approach to every patient allowing for an accurate, safe and efficient diagnosis to be made. He also understands the importance of lifestyle modifications and focusses a significant proportion of his consultation on preventative strategies including the importance of optimising diet and exercise regimes.


Dr Assomull is passionate about his field of expertise and his research has been presented at International Conferences in both Europe and the USA and continues to be widely cited in medical literature. Dr Assomull continues to be involved with research that is exploring the applications of Cardiac MRI and Coronary Intervention in current clinical practice. His research thesis was awarded the Ralph Noble Prize in 2012 by the University of Cambridge.

Diseases, Medical Tests and Treatments
  • 24 hour blood pressure monitor
  • Cardiac Rehabilitation
  • ECG monitor (24 hours)
  • Coronary stent insertion
  • Bubble Contrast Echocardiography
  • Echocardiogram
  • Myocardial Perfusion Scans
  • Calcium Coronary Score
  • Cardiac Magnetic Resonance Scan (cardiac MRI)
  • CT Coronary Angiogram
  • ECG (electrocardiogram)
  • Exercise Stress Test
  • Angioplasty
  • Coronary angiography


  • Acute Coronary Syndrome
  • Congestive Heart Failure
  • Heart Attack
  • Heart Valve Problems
  • Atrial Fibrillation
  • Cardiomyopathy 
  • Coronary Artery Disease
  • Heart murmurs
  • High Blood Pressure
  • Loss of consciousness (Syncope)
  • Unstable Angina
  • Angina
  • Chest Pain
  • Dizziness
  • Heart Muscle Disease
  • Hypertrophic Cardiomyopathy
  • Palpitations 
  • Valvular Heart Disease
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Expert in: Cardiology
Recommended by 7 specialists
16 years of experience
Interventional Cardiology

Dr Sen is an Internationally recognised Consultant Cardiologist at the Hammersmith Hospital.

Dr Sen has expertise in General and Interventional Cardiology. He has a special interest in the management and assessment of coronary artery disease and cardiac valve disease. Dr Sen is often invited to lecture and train cardiologists from around the world and perform certain procedures 'live' to audiences at International Cardiology Conferences. 

Dr Sen performs CT angiography, invasive coronary angiography, coronary angioplasty, TAVI and pacemaker insertion.

Along side the clinical aspect of his career Dr Sen runs an active PhD research program that is focussed on improving patient care. Dr Sen's research has been published in the leading Cardiology Journals and has changed the way cardiology is practiced around the world.

He is a Co-Founder of One Heart Clinic; a state-of-the-art private cardiac diagnostic unit.

Dr Sen's academic awards include the Royal Society of Medicine Investigator of the Year Award (2013), the Royal Society of Medicine President's Gold Medal (2013), the prestigious Imperial College Armstrong Medal and Prize (2012), the Investigator of the Year Award at the British Cardiac Intervention Society Advanced Coronary Intervention (2012). 

Diseases, Medical Tests and Treatments
  • Coronary angiography
  • Devices: single and dual chamber pacemaker insertion
  • Fractional flow reserve (FFR), Instant wave free ratio (iFR)
  • Intravascular Ultrasound (IVUS), Opitcal Coherence Tomography (OCT)
  • Percutaneous coronary intervention with/without stenting
  • Reporting of echocardiography
  • Stress echocardiography
  • Balloon Aortic Valvuloplasty
  • Transcatheter aortic valve implantation (TAVI)
  • Transthoracic echocardiography
  • Hypertension
  • Hypercholesterolaemia
  • Palpitations
  • Shortness of breath
  • Dizziness
  • Chest pain
  • Ischaemic heart disease
  • Heart attacks
  • Heart Failure
  • Valve disease
  • Transcatheter aortic valve implantation (TAVI)
  • Pacemakers
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Expert in: Cardiology
Recommended by 5 specialists
16 years of experience
Interventional Cardiology

Dr. Nijjer (see his website, is an award winning Cardiologist who has an international reputation in coronary heart disease. Dr Nijjer is available in person and via video consultations - these are available daily, even in the evenings and weekends. He sees patients with chest pain or angina, breathlessness, palpitations, high blood pressure, and all cardiac problems.

He works a Consultant Cardiologist at both the Hammersmith Hospital and Chelsea & Westminster Foundation NHS Trust. He is a Honorary Senior Clinical Lecturer at Imperial College London. He undertakes his private practice at 68 Harley Street as part of the One Heart Clinic. He also see patients at BMI Syon Clinic, BMI Bishops Wood, the Cromwell Hospital and the Wellington Hospital. He also see patients at the private facilities at the Hammersmith Hospital and Chelsea & Westminster Hospital.

Dr Nijjer performs coronary intervention (angiography and stenting) at the catheter suites of the Hammersmith Hospital and Chelsea & Westminster NHS Foundation Trust. He also performs procedures at the Cromwell Hospital and the Wellington Hospital including pacemakers. He provides a full range of invasive procedures for the diagnosis and treatment of coronary artery disease. He is part of the Primary Angioplasty on-call service at the Hammersmith Hospital which provides 24/7 care for patients suffering from a heart attack.

Dr Nijjer is an internationally recognised expert in invasive coronary physiology, an advanced technique which can help guide Cardiologists on when and where a coronary stent is needed. He has performed ground-breaking research into invasive technologies that have changed the field and lead to better treatment of patients around the world. He is regularly invited as a speaker and faculty at international conferences including the American College of Cardiology and TCT. Following his research, he provides medical education to other Doctors.

Dr. Nijjer studied medicine at the University of Bristol, where he graduated with Honours in 2004 with two undergraduate scholarships and many academic prizes. He was also awarded a First Class Honours degree with prizes in Pharmacology which was supported by the prestigious Wolfson Award from the Royal College of Physicians.

He undertook his Cardiology training at the Hammersmith Hospital, Charing Cross Hospital, St Mary's Hospital, Harefield Hospital and the Royal Brompton Hospital. In his role as Consultant, Dr Nijjer has strived to deliver the best patient care while working across multiple hospital sites in west London. He works closely with General Practitioners, Kidney and Diabetes specialists to ensure the best outcomes for patients with complex needs.

Dr. Nijjer is committed to the better treatment of patients through the development and application of new medical technologies. His PhD, funded by the Medical Research Council and awarded by Imperial College, involved the development of new techniques (iFR and iFR-pullback) to measure blood flow in coronary arteries with blockages. Dr Nijjer pioneered the use of iFR-pullback to better use coronary stents in patients with many blockages and the iFR technology has now been used in thousands of patients around the world. A recent editorial in the New England Journal of Medicine referred to it as 'the new gold standard' and major international studies are ongoing and Dr Nijjer has worked on the design and running of these complex studies.

Dr. Nijjer possesses clinical expertise in all aspects of cardiology, including treating patients with chest pain, angina, breathlessness on exertion, palpitations or collapse. He has expertise in assessing and treating patients at increased risk of heart disease such as patients with high blood pressure, diabetes or raised cholesterol. He uses all of the latest stress testing techniques and if needed, invasive angiography, coronary stenting, and can implant pacemakers or cardiac monitoring devices when it is needed.

Dr. Nijjer's holistic approach to treatment is one of understanding as he recognises and responds to the fact that an individual's medical issues exist alongside other aspects of their lives, treating any medical conditions in a way that fits the lifestyle of his patients. He utilises the latest guideline-supported cardiac test to ensure his patients are fully investigated in addition to his thorough clinical assessment.

Personal Website for more details

Visit: website to read more information on how Dr Nijjer can help you and to read information on common heart tests.

Videos of Dr Nijjer

Visit this link to see Dr Nijjer discussing his practice, his healthcare ethos and how he can help you with your health concerns.

Visit this link to see Dr Nijjer describe his website and the information available regarding cardiac testing and treatment, as well Covid-19.

Visit this link to see Dr Nijjer describing which patients who need coronary angiography.

Visit this link to see Dr Nijjer describing heart artery stenting:

Visit this Youtube link to see Dr Nijjer discussing the management and treatment approach to Atrial Fibrillation - a common heart problem:

Video of Dr Nijjer talking about advances in healthcare technology

Diseases, Medical Tests and Treatments
  • Dr Nijjer provides a full range of Cardiac Tests. Many of these can be performed on the same day as the Consultation (some times referred to as 'One Stop Clinic'). You can learn more about these tests through this link
  • Coronary Angiography (diagnosis of coronary artery disease)
  • Percutaneous coronary intervention with/without stenting
  • Advanced adjunctive intracoronary technologies (3D pictures of inside the heart arteries)
  • Fractional flow reserve (FFR) (measure blood flow within the heart vessels)
  • Instant wave free ratio (iFR) (measure blood flow within the heart vessels)
  • Coronary flow reserve (CFR) (measure blood flow within the heart vessels)
  • Intravascular Ultrasound (IVUS) (3D pictures of inside the heart arteries)
  • Optical Coherence Tomography (OCT) (3D pictures of inside the heart arteries)
  • Pacemaker Devices: single and dual chamber pacemaker insertion
  • Echocardiography (take ultrasound pictures of the heart and valves)
  • Reporting of echocardiography
  • Exercise Stress Tests
  • Ambulatory Blood Pressure Monitoring
  • ECG Holter monitoring
  • Stress echocardiography
  • CT Coronary Angiography (Angiography using CT scanner)
  • Reporting of CT Coronary Angiography
  • Cardiac MRI (highly specialist test, used to assess for heart muscle problems, ischaemia and scaring)
  • Dr Nijjer will provide full explantion of all of these tests, why they are needed and how they are performed. You will get a full explanation of the results and how they apply to your care. Dr Nijjer individualises his care so that your specific programme of tests are applicable to you and your condition. 
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Expert in: Cardiology
Recommended by 4 specialists
14 years of experience
Heart Muscle Disease/Cardiomyopathy, Interventional Cardiology

Dr Oliver Guttmann studied at Cambridge and University College London, graduating with a first-class BA (Hons) in Neuroscience and merit in Medicine. He became a member of the Royal College of Physicians before completing his training in cardiology at the Heart Hospital, London Chest Hospital and the Barts Heart Centre. He obtained his MD (Res) for research in atrial fibrillation and stroke in hypertrophic cardiomyopathy at University College London.


Dr Guttmann now works as a Consultant Cardiologist at St Bartholomew's Hospital and Honorary Associate Professor at UCL. He consults in general adult cardiology and has a special interest in chest pain management and coronary interventions. Dr Guttmann also treats all patients with suspected or confirmed cardiomyopathies and has particular expertise in myocarditis and hypertrophic cardiomyopathy. Dr Guttmann also offers telephone and video consultations.


Dr Guttmann also takes an interest in research and has published articles on inherited inflammatory heart disease, risk stratification in cardiomyopathy and outcomes of percutaneous coronary intervention. 


He is the Clinical Lead of the Coronary Care Unit at Barts Heart Centre. He also edits proposals for Cochrane Heart and is a member of the working group on pericardial and myocardial disease of the European Society of Cardiology and the Finance Committee of the British Cardiovascular Society.


Diseases, Medical Tests and Treatments
  • Chest pain management
  • Coronary angiography
  • Percutaneous coronary intervention with/without stenting
  • Alcohol septal ablation for hypertrophic cardiomyopathy
  • Fractional flow reserve (FFR)
  • Intravascular Ultrasound (IVUS)
  • Optical Coherence Tomography (OCT)
  • Right heart catheterisation
  • Endomyocardial biopsy
  • General Cardiology (high blood pressure, palpitations, high cholesterol, chest pain, angina)
  • Interventional Cardiology
  • Percutaneous coronary intervention
  • Inherited Heart Muscle Disease/Cardiomyopathy
  • Acquired Heart Muscle Disease
  • Myocarditis
  • Inflammatory heart muscle disease
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Expert in: Cardiology
Recommended by 9 specialists
16 years of experience
Heart Failure, Heart Muscle Disease/Cardiomyopathy, Interventional Cardiology + 1 more

Dr Pavlidis is a Consultant Cardiologist at Guy’s and St. Thomas’ NHS Foundation

Trust. He is an Interventional Cardiologist who specialises in the investigation and treatment of coronary artery disease. He undertook training in interventional cardiology at St Thomas' and the London Chest Hospitals.

Dr Pavlidis has a particular interest in complex coronary interventions and percutaneous treatment of coronary chronic total occlusions. He also consults on a wide range of other conditions including palpitations, valvular heart disease, hypertension, dyslipidaemias and heart failure.

He is actively involved in clinical research with a specific interest in the areas of preventive and interventional cardiology. He completed his PhD thesis on primary dyslipidaemias and he has authored a number of peer-reviewed publications and book chapters.

Diseases, Medical Tests and Treatments

Complex coronary intervention

Percutaneous treatment of chronic total occlusions

Complex coronary intervention

Percutaneous treatment of chronic total occlusion

Intracoronary imaging (intravascular ultrasound, OCT)

Functional assessment of coronary artery disease (pressure wire studies)

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Expert in: Cardiology
Recommended by 2 specialists
13 years of experience
Paediatric Cardiology

Dr Alessandro Giardini has worked at Great Ormond Street Hospital since 2007 where he is the Director of Inpatient Services. He oversees the care of all children admitted to the hospital for investigation and treatment of congenital or acquired heart defects. 

Dr. Giardini completed medical school in Bologna, Italy, where he also got his PhD in the pathophysiology of heart failure in patients with congenital heart disease. He completed his specialist training in Paediatric Cardiology at the University of Bologna, Italy, and at the University of California in San Francisco.

As he is an expert in the diagnosis and management of children with congenital heart disease, in particular hypoplastic left heart syndrome. He is the lead for cardiology in-patient services. He also runs specialist clinics for children with paediatric hypertrophic cardiomyopathy. Exercise physiology and the investigation and treatment of syncope and chest pain are also interests.

Dr. Giardini is particularly renowned in providing guidance for children with documented cardiac disease as well as those who complain of symptoms which arise during exercise, such as chest pain, palpitations or fainting/syncope. Dr. Giardini provides cardiology advice and assessment to children and adolescents who actively participate or are planning to participate in sports or those children who are practicing a sport at an athletic or competitive level. He is patient-focussed and very compassionate and understanding with children.

Dr Giardini says: "For me, families are an essential part of the One Team concept that underlies everything we do in treating children in the cardiac ward. Our care is highly technical but must be delivered in a humane, personalised way".


Diseases, Medical Tests and Treatments
  • Children and adolescents with congenital heart disease.
  • Exercise testing in Children
  • Cardiac investigations
  • Screening of cardiomyopathies
  • Screening for congenital heart defect (CHD)
  • Pre sport participation screening.
  • Genetic Heart Defects
  • Head up tilt test and active standing test for postural tachycardia syndrome (POTS) and syncope (fainting/blackout).

Research Interests Include;

  • Usefulness of exercise testing to predict the risk of children and adolescents with congenital heart disease.
  • The genetic causes of congenital heart disease (in collaboration with USA centres).
  • Results of surgery for children with single ventricles, hypo plastic left heart syndrome and Fontan operation.
  • Postural tachycardia syndrome (POTS) and syncope/loss of consciusness
  • Chest pain
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