MBBS, MD, FRCS
26 years of experience
Harrow, HA1 3RX
(+6 more)
27 connections in healthcare
Skill endorsed
by Mr David Greenstein, Mr Simon Harris and 3 other professionals
26 years of experience
Harrow, HA1 3RX
(+6 more)
27 connections in healthcare
Skill endorsed
by Mr David Greenstein, Mr Simon Harris and 3 other professionals
Areas of expertise
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Mr. Selva Theivacumar is a highly experienced Consultant Vascular Surgeon renowned for his expertise in minimally invasive vascular procedures. He qualified in 1999 from the University of Colombo in Sri Lanka and went on to complete a research degree focusing on the minimally invasive treatment of varicose veins, earning his MD from the University of Leeds.
Mr. Theivacumar received extensive vascular training across renowned institutions in Yorkshire and London, including King’s College Hospital and St Thomas’ Hospital. He is proficient in both open surgical and endovascular techniques, offering a comprehensive skill set for the management of complex vascular conditions.
His specialist interests include the treatment of varicose veins, aortic aneurysms, peripheral arterial disease (claudication), and stroke prevention through surgical management of TIAs. A recognised leader in the field, Mr. Theivacumar has published multiple peer-reviewed scientific papers and has contributed significantly to the development of modern varicose vein treatments.
He provides a full range of minimally invasive vein procedures, such as Endovenous Thermal Ablation (laser or radiofrequency), and Ultrasound-Guided Foam Sclerotherapy. In arterial disease, he specialises in advanced interventions like angioplasty and stenting, endovascular aneurysm repair, femoral endarterectomy, and lower limb bypass surgery.
With a strong focus on patient-centred care, Mr. Theivacumar tailors his treatment plans to each individual’s condition and lifestyle. His goal is to reduce recovery times and improve outcomes through the use of modern, evidence-based techniques.
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General Medical Council
No. 6031258
Royal College of Surgeons
No. 1010304
The College of Phlebology Venous Registry
No. 13246
University of Colombo
Medicine
Graduated 2000
MBBS University of Colombo, Sri Lanka 1999
MD University of Leeds
Memberships:
Read publications and papers written by this specialist.
10 / 07 / 2025
Northwick Park doctors save woman who couldn’t eat for over a year - Harrow Online
Published in Harrow Online
25 / 10 / 2017
Man saved after he stopped breathing and collapsed on plane
Published in Surrey News
10 / 05 / 2011
Endovenous Laser Ablation (EVLA) to Treat Recurrent Varicose Veins
Published in European Journal of vascular and endovascular surgery
28 / 04 / 2008
Endovenous laser ablation: Does standard above-knee great saphenous vein ablation provide optimum results in patients with both above- and below-knee reflux? A randomized controlled trial
Published in Journal of Vascular Surgery
New appointment
£250Follow-up appointment
£200The Clementine Churchill Hospital, Sudbury Hill, Harrow, United Kingdom, HA1 3RX
Chase Farm, Enfield, United Kingdom, EN28SD
Rickmansworth Road, Northwood, London, United Kingdom, HA6 2JW
Cavell Drive, Uplands Park Rd, Enfield, London, United Kingdom, EN2 7PR
46/50 Sunny Gardens Road, Hendon, London, United Kingdom, NW4 1RP
Watford Rd, London, United Kingdom, HA1 3UJ
Watford Road, London, United Kingdom, HA1 3UJ
Areas of expertise
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This summary was created by AI based on recent reviews
Mr Selva Theivacumar is an excellent and professional specialist, providing clear explanations to patients. Patients report very positive results from a range of vascular interventions, including complex carotid artery operations, DVT management, and various artery blockages. The specialist’s skill, coupled with excellent advice and comprehensive aftercare, ensures patients feel comfortable and confident, leading to a new lease of life. His services are highly regarded for treating conditions requiring vascular interventions such as angioplasty and surgeries related to varicose veins.
Excellent care all the way during the procedure. Thank you doctor and the team for the care. Hope my recovery to go smoothly.

Thank you for your kind words.
Very calm and professional and reassuring. I can't fault him at all.

It was a pleasure to treat your veins. Thank you for your kind words
From the very first appointment Dr Theivacumar listened and explained everything clearly and made me feel cared for during this difficult journey. His knowledge, experience and professionalism towards me provided confidence every step of the way.

Thank you for your kind words.
Mr Theivacumar was easy going, and answered my questions, I was in on time and out quickly.

Thank you for your kind words.
I saw Mr Theivacumar for a follow up. He answered all my questions and took into account my personal situation when considering the best treatment. He is an amazing surgeon and I am so grateful to him as his quick action saved my leg.

Thank you for your kind words. You did very well.
Underwent surgery with pre and post operation appointments. Very positive experience.

Thank you for your kind words. You did very well.
I was treated with Excellent professional care which is still ongoing..I have been given the best advice for after care. Very happy with the results and help.

Thank you for your kind words. You did very well.
I have had excellent experiences with Mr Theivacumar with his vast experience and expertise with DVT. The procedure was done in a professional manner and I was then had an aftercare review which went very well.

Thank you or your kind words.
I had an absolute amazing consultation with the Dr. He is very caring and professional. He listened to everything I said and I coudnt have been happier with the results.

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Follow up from a vascular intervention and scan done 2nd February. It was a fantastic outcome and my mum had a memorable trip to India after the surgery

Thank you or your kind words.
An excellent technician in endovascular surgery
18 Jul 2026
Mr David Greenstein
Vascular SurgeonVery experienced and respected colleague with who I work closely
06 Feb 2026
Mr Simon Harris
General SurgeonMr Theivacumar is my valuable colleague helping me with treating my patients with varicose eczema and lipodermatosclerosis.
12 Oct 2025
Dr Mohammad Ghazavi
DermatologistExcellent doctor
04 Sep 2025
Mr Said Abisi
General Surgeon
Read articles from Mr N Selva Theivacumar explaining process of procedures and other important things you should know before choosing your provider.

This is my research thesis on minimally invasive laser treatment for varicose veins. I pioneered in varicose vein treatment since 2005
10 April 2011
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An 80-year-old woman from Northolt has undergone life-saving surgery after spending more than a year unable to eat without excruciating pain.
10 July 2025
ealing.news

The Australian suffered a ruptured aneurysm at Heathrow, which would have been fatal if not treated immediately
10 May 2017
getsurrey.co.uk

Vascular surgeon saves cyclist's life
19 June 2023
lnwh.nhs.uk
What are Mr N Selva Theivacumar's reviews like?
Mr N Selva Theivacumar's overall patient rating is 4.97 out of 5 stars on Doctify. This is based on 40 reviews.
What languages does Mr N Selva Theivacumar speak?
Mr N Selva Theivacumar speaks English, Sinhala and Tamil
Where is Mr N Selva Theivacumar located?
Mr N Selva Theivacumar primarily practices at The Clementine Churchill Hospital (part of Circle Health Group), located at The Clementine Churchill Hospital, Sudbury Hill, Harrow, United Kingdom, HA1 3RX
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What are Mr N Selva Theivacumar working hours?
Mr N Selva Theivacumar is working Wednesday (17:30 - 19:30), Thursday (17:30 - 19:30)
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Does Mr N Selva Theivacumar accept new patients?
Mr N Selva Theivacumar generally accepts new patients.
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