Treatment restrictions due to coronavirus (COVID-19)

As part of our longstanding relationship, we are proud to be dedicating our resources to the NHS at this important time. As a result many of our treatments are currently suspended and we are reviewing all planned procedures and consultations. We are making every effort to talk to impacted patients and apologise for any inconvenience this may cause.

Dr Georgios Karagiannis

Dr Georgios Karagiannis

Consultant Cardiologist

Practising at

Spire Thames Valley Hospital

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Treatment information

Some of the principal treatments carried out by Dr Georgios Karagiannis at Spire include:


Other treatments

  • Atrial fibrillation
  • Coronary artery disease
  • Echocardiography
  • Hypertension
  • Stroke prevention


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Professional profile

I studied medicine at the Aristotle University of Thessaloniki in Greece. I completed my specialist training in Greece and I was awarded 'excellent' marks on completion. In 2009, I successfully completed my PhD in Cardiology, for which I also received an 'excellent' mark. Since 2013, I have been working at Harefield Hospital as a member of the Transplant Department. I am also working at Hillingdon Hospital as a Consultant Cardiologist.

I have extensive experience in general and acute cardiology. My special interest is in heart failure, echocardiography, acute cardiac care, preventive cardiology.

I can speak English, German and Greek.

Clinical Interests

Get in touch


Marketing Information

Spire would like to provide you with marketing information about products and services offered by Spire and by selected third-party partners. If you do not consent for us to process your personal data for marketing activities, we will still be able to contact you about your enquiry.

We may contact you by email, SMS or phone about your enquiry. If we try to contact you by phone (mobile and/or landline) and you are not available, we may leave you a voicemail message. We may also use your details to contact you about patient surveys we use for improving our service or monitoring outcomes, which are not a form of marketing.

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Qualification and professional memberships

MD, PHD, FESC, FHFA / Aristotle University of Thessaloniki, Greece / 2002
Doctor of Medicine

Professional memberships

European Society of Cardiology
British Society of Heart Failure
Royal College of Physicians

Professional leadership

Educational Lead for Medicine at Hillingdon Hospital

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Current NHS posts

Cardiology Department, Hillingdon Hospital

Transplant Department, Harefield Hospital

Senior Lecturer, Brunel University

Hon. Senior Clinical Lecturer, Imperial College, London

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Personal Profile

I enjoy spending my spare time with my wife and two sons. I also love cycling and playing basketball.

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Private contact details

Private secretary Madeleine Than (Maddie)
Private secretary telephone 0800 030 9288
Private secretary email