Dr Nikolaos Diamantis
MD, MRCP, PhD
22 years of experience
London, NW8 7JA
(+3 more)
11 connections in healthcare
Skill endorsed
by Dr Dionysis Papadatos-Pastos, Professor Bijendra Patel and 1 other professional
22 years of experience
London, NW8 7JA
(+3 more)
11 connections in healthcare
Skill endorsed
by Dr Dionysis Papadatos-Pastos, Professor Bijendra Patel and 1 other professional
Areas of expertise
Contact
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About Dr Nikolaos Diamantis
Dr Nikos Diamantis is a Medical Oncology Consultant at St Bartholomew's Hospital specialising in colorectal, oesphageal, gastric, pancreatic, liver and bile duct cancers, and cancers of unknown primary. He is the Barts Trust Lead for Acute Oncology and Cancer of Uknowon Primay.
Dr Diamantis underwent specialist training at the Imperial College Healthcare Hammersmith, St Mary's and Harefield Hospitals. He was awarded the Greek national Oncology fellowship scholarship and went on to conduct clinical research for 2 years at the Drug Development Unit of the Royal Marsden.
Research interests include immunotherapy for GI malignancies and first in human clinical trials. Dr Diamantis is a Principal Investigator for a number of Phase 2 and 3 trials.
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Subspecialties
- Medical Oncology
Areas of expertise
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Registered with
General Medical Council
No. 7013255
Education
University of Athens
Medicine
Graduated 2004
Qualifications
MRCP (UK) Medical Oncology 2015
Medical Oncology Board Exams 2015
ESMO Medical Oncology Certificate 2014
MRCP (London, UK) 2012
PhD with Honors - University of Athens 2010
MD - Ptychio Iatrikes with merit, National and Kapoditstrian University of Athens, Greece, 2004
Languages spoken
- English
Insurers
- WPA
Fees
New appointment
£350Follow-up appointment
£250
Locations
Cromwell Hospital
164-178 Cromwell Rd, London, United Kingdom, SW5 0TU
Opening hours
Facilities
Opening hours
Facilities
HCA Healthcare UK The Harley Street Clinic
35 Weymouth Street, London, United Kingdom, W1G 8BJ
HCA Healthcare UK The Wellington Hospital
8A Wellington Place, St Johns Wood, London, United Kingdom, NW8 9LE
HCA Healthcare UK The Wellington Hospital Outpatients
15-17 Lodge Road, London, United Kingdom, NW8 7JA
Opening hours
Facilities
Areas of expertise
Contact
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Reviews
AI Review Summary
This summary was created by AI based on recent reviews
Dr Nikolaos Diamantis is excellent, caring, and knowledgeable, providing clear explanations during patient interactions. He details treatment plans that involve chemotherapy for various cancers, including oesophageal and colorectal. Dr Diamantis listens to patients, respects their views, adapts treatment to individual needs, and shows strong clinical expertise and close monitoring. Patients value his comprehensive management of conditions such as bowel cancer.
As with all doctors just make sure you are prepared with the most important questions in advance, as consultation time is limited
We had a very useful and pleasant preliminary meeting with Dr Diamantis, who was very attentive to my case, and we look forward to further information in due course
Thanks for your help during a very difficult time in our life and for been honest with the prognosis. Thanks for doing your absolute best in what was a hopeless situation
Outstanding, very understanding, clear advice given, very professional, overall excellent, taking time to explain everything. I would not hesitate in recommending Dr Diamantis
My husband and I saw Dr Diamantis to ask about getting treatment for my husband's esophagal cancer. since we have only recently arrived in England andhave no previous Sevious experieance of the National Health Service. this was proving difficult. Dr Diamanatis was quick to understand our difficulty, ofered reassuring advice, and promised to f=give us such help as he could to access the system. We are most grateful and hope for the best.
Having a consultation on Monday the process from everyone has been highly efficient from initial enquiry through to booking
I received exceptional care from Dr. Diamantis, among others, in my recent inpatient visit
Dr Diamantis is caring, approachable, and highly knowledgeable. You feel safe in his care and appreciate that he takes the time to thoroughly explain treatment plans ensuring that you fully understand what is proposed. He is happy to answer all your questions and you don’t feel rushed. You are in good hands which brings immense comfort during highly stressful cancer treatments. I highly recommend him.
Skill Endorsements
Nikos is a valued colleague and a knowledgeable clinician to whom I confidently refer patients.
19 Jun 2025
Dr Dionysis Papadatos-Pastos
OncologistDr Nikolaos Diamantis is an outstanding oncologist whose clinical expertise and compassionate care make a real difference to his patients. He combines scientific precision with genuine empathy and professionalism.
22 May 2025
Professor Bijendra Patel
General Surgeon
Mr Yazan Masannat
Breast SurgeonFind out more on the Doctify Health hub for Dr Nikolaos Diamantis's specialty, Oncology.
FAQ
What are Dr Nikolaos Diamantis's reviews like?
Dr Nikolaos Diamantis's overall patient rating is 4.88 out of 5 stars on Doctify. This is based on 24 reviews.
What languages does Dr Nikolaos Diamantis speak?
Dr Nikolaos Diamantis speaks English
Where is Dr Nikolaos Diamantis located?
Dr Nikolaos Diamantis primarily practices at HCA Healthcare UK The Wellington Hospital Outpatients, located at 15-17 Lodge Road, London, United Kingdom, NW8 7JA
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What are Dr Nikolaos Diamantis working hours?
Dr Nikolaos Diamantis is working Thursday (10:00 - 12:00)
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Does Dr Nikolaos Diamantis accept new patients?
Dr Nikolaos Diamantis generally accepts new patients.
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