About us

Call us on 020 3488 3307 or email us at info@medicalprime.co.uk

Dr Theodora Kalentzi MBBS(equiv) DRCOG MRCGP MSc

Theodora is a General Practitioner (GP) who is passionate about quality care and helping people consider a holistic approach to their health and wellness. Over her 25 year career, she has gained experience in various clinical specialties, education, mentoring and management.

Theodora qualified as a doctor in Greece in 1992, where she worked in the community and hospital care before coming to the UK in 1996. She was trained in a variety of specialties including general medicine, gynaecology, chest medicine, care of the elderly and accident & emergency before she became a GP and member of the Royal College of GPs in 2001. She subsequently undertook a Masters Degree in Health Management at Imperial College London.

Amongst her many clinical interests, Theodora also has a particular interest in women's health. She holds a postgraduate diploma in Obstetrics and Gynaecology and has obtained the advanced certificate of special skills training in menopause care. She is an all-rounder with a wealth of experience in medical management and professional development, having held senior management roles alongside her clinical work.

She enjoys traveling, snowboarding, swimming, reading, wine tasting, expanding her horizons via TED talks and above all making a difference.

Dr Theodora Kalentzi

Vassilios Klidaras

Business Manager

Vassilios is a software developer with many years of experience in the finance sector and recently in business startups. He is passionate about technology and the positive effect it can have on society if used in the right way. 


He believes in technology and innovation as the way forward for managing the health needs of a growing and ageing population against the exponentially rising health care costs.

Vassilios is a keen advocate of continuous self-improvement and living a life of purpose. 

Vassilis Klidaras

Feedback from our patients

Considerate, knowledgeable and approachable Dr. I found Dr Kalentzi very knowledgable and approachable. She was very thorough in finding out about my symptoms and recommended relevant treatment. Her bedside manner and consideration for my comfort were very good. I will definitely see her for a follow up appointment and would recommend her.

Annie. Review on Trust Pilot
12 July 2018

An absolutely unparraleled and patient centric experience.  Having had some health issues for a while and having seen several private and NHS practitioners where a holistic approach was never considered, Dr. Theodora has taken the time to firstly understand me and my lifestyle, then she has thoroughly gone through my entire medical history, comparing my results over the years, questioned my symptoms in detail, recommended some more tests which she then interpreted and explained to me patiently, to then formulate a detailed treatment plan with all the possible treatment options, giving me the choice to opt for the one that I thought it was most suitable for me and that I would feel comfortable with - considering that some of the medicines could have some unpleasant side effects. As a result, I would wholeheartedly recommend Dr. Teodora to anyone who is looking for a truly 5 star service or who has not yet found the right treatment approach to their health issues.

Cristina Sabau. Review on trustpilot.com
5 June 2018

Came away fully informed about HRT and what is right for me. I have been frustrated with seeing doctors through the health system and the various opinions and advice. Prime Medical gave me as much time as I needed to question and fully understand HRT. I saw Dr Theodora Kalentzi and she listened, questioned and was very open about the different treatments, pros and cons for HRT treatment. I feel confident in the approach that I have chosen based on what I have learnt and look forward to my follow up visit and progress in a few months.

DH Review on trustpilot.com
30 May 2018

I been to see Dr.Kalenzi , the only things I can say it that she is very profesional , she explain to me everything I ask for and guide me very well , I understand everything that se told me taking in consideration that I'm not English she been patient with me.She understand right the way what I need. Thank you Dr Kalenzi.

NM Review on trustpilot.com
30 May 2018

I feel very fortunate to have found an exceptional private GP Dr Theodora Kalentzi at the Medical Prime Clinic in the heart of the City of London. I have often struggled in the past to have to take 2-3 hours off work in order to see my NHS GP for just a 10-minute appointment. So, having a good private GP within a walking distance from my office in the City, is hugely beneficial. From the first visit, I have felt that Dr Theodora Kalentzi is both a top professional and a very considered and friendly person. She carefully listened to my medical history, asked questions and managed to address my major concerns within two appointments. After a full examination, Dr Kalentzi clearly explained the blood test results and she took in consideration my overall medical history as well as any potential genetic predispositions I may have. I really appreciate such holistic approach and I have even discovered that my Healthy Heart Age is five years younger than my actual age! I am very happy to recommend Dr Kalentzi to anyone who is looking for a good GP and a high quality service in the City of London.

R Gray ( Google review on medical prime)
16 May 2018

I had an appointment with Dr Kalentzi to discuss the symptoms I was having following the menapause. She was very thorough in investigating my overall health and symptoms, and very patient answering all my questions. I asked to have some blood tests to check various levels of hormones, iron, B12 and thyroid, Dr K helped group the blood tests together to make it the most cost effective. I received the results two days later and they confirmed the low levels of progesterone and oestrogen that Dr K suspected and I have started the HRT she prescribed. I also had a smear test and it was great to have it all sorted in one appointment. I would highly recommend Dr Kalentzi and won't hesitate to see her again.

Georgina Taunt ( Google review on medical prime)
17 May 2018

My appointment with Dr Theodora Kalentzi regarding menopause was brilliant. She took the time to listen to all my symptoms, we went over my medical history thoroughly to make sure HRT was the right treatment for me, she explained different treatments and let me decide what I would be most comfortable with, and I went out of the clinic knowledgeable and confident that I made the right decision, not only in the treatment which was prescribed, but the doctor I chose. Thank you Dr Kalentzi for an excellent consultation.

DS Review on trustpilot.com
12 July

Dr Theodora Kalentzi is so lovely and empathetic and put me at ease immediately. She is fantastically knowledgeable and talked through all the options with me. She is willing to discuss and prescribe all the latest innovations and discuss all the pros and cons. I cannot recommend her highly enough and I feel so grateful to have found her.

SP Review on trustpilot.com
14 June 2018

My experience with Dr Kalentzi was truly impressive .This is a very experienced , highly knowledgeable , motivated and very empathic general practitioner who is truly focused on resolving her patients' problems and getting 'results'!

George Druttman ( Google review on medical prime)
3 May 2018

This very experienced Dr Theodora is a General Practitioner in the true and ideal way as she can look after all age groups and any problem. I can confirm about her excellent listening skills, her gentle, respectful manner, the thoroughness of a skilled and knowledgeable physician, and an engaging personality. Her generously-timed consultation enabled thoroughness and opportunity to ask and discuss. She assisted immediately with better decision-making for my problem and took the time afterwards to point me towards informational resources to further reduce my suffering. Is it clear that she can give responsible, up-to-date, wise and ethical guidance. I am free to return to her for ongoing care or go to my own GP surgery, and she is happy to write to them if I so wish. I am really happy with my experience with Dr Theodora and now feel confident that I am on the right track. At any time I can choose to go back to her: whether for this or for any other issue.

22 July 2018

I needed a blood test urgently, I found Medical Prime Clinic on Google Maps on a Friday and I was seen on Saturday morning, the next day. I highly recommend their excellent service, fast and efficient. I am very satisfied with the service provided.

Quinta Ana Pérez Sierra
15 September 2018

I am extremely impress with the medical support from Dr Theodora Kalentzi. She is excellent at evaluating the patient and takes time to consider medical history and formulates the best solution in the best interest of the patient. She takes time to listen and to explain in each consultation. Totally different to the 15 min / 1 issue NHS approach. I really appreciate such holistic approach and care to attention. I would totally recommend her!

13 Sept 2018

Dr Kalentzi was able to answer my questions with regard to going onto HRT, giving me the information I needed to decide myself what I wanted to do. I have now been on HRT for 3 months and can honestly say the quality of my life has returned, the hot flushes and night sweats have gone, I have my energy back, blood pressure is back to normal and I am having good nights sleep. I will be continuing with HRT, great to feel like myself again. Thank you Dr Kalentzi.

Carol White ( review on trustpilot )
28 Nov 2018

Call us on 020 3488 3307 or email us at info@medicalprime.co.uk