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Mr Mahantesh KaroshiConsultant Gynaecologist in W1G Marylebone London
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  • Mr Mahantesh Karoshi

Mr Mahantesh Karoshi

Consultant Gynaecologist in W1G Marylebone London and Central London

MD FRCOG Diploma in Clinical Risk Management
GMC: 5199074

5.0148reviewsReview

Expert in:
Heavy periods
Polycystic ovary syndrome (PCOS)
Infertility
Ovarian cyst
Adenomyosis
Miscarriage
  • Information
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Professional statement

Mr Mahantesh Karoshi is a London-based women’s health expert and consultant gynaecologist, with a special interest in ovarian cysts, heavy menstrual bleeding, infertility, fibroids, and adenomyosis. He is currently one of the most highly-rated gynaecologists in London with a very good reputation amongst his patients and peers.

Mr Karoshi's work is recognised internationally, having volunteered in Ethiopia’s Gimbie Hospital, and later receiving the Bernhard Baron Travelling Fellowship from the Royal College of Obstetricians and Gynaecologists which led to his work in the University of Buenos Aires. Here he worked on the techniques needed to surgically manage morbidly adherent placental disorders - a serious condition that can occur in women with multiple caesarean sections.

He believes in an open doctor-patient relationship, being sure to include the patient and educating them so that they understand their condition better and they can be directly involved in their care and management at every stage. Aside from his clinical work, he is actively involved in research, which together with his experience, has given him the opportunity to publish the first stand-alone textbook on postpartum haemorrhage which was launched by HRH Princess Anne.

At the core of Mr Karoshi's practice is a high standard of professionalism where patients are involved in their treatment and where the latest techniques and advancements are used to provide an extremely high level of care.

Clinics

108 Harley Street
  • 108 Harley Street profile image

    108 Harley Street Medical

    W1G Marylebone London, 108 Harley Street, W1G 7ET

    Medical insurances accepted

    I'm paying for myself
    Bupa
    AXA
    Cigna
    WPA
    Simply Health
    Allianz
    CS Healthcare

Credentials

Professional experience

  • 16 years of experience
  • Consultant Obstetrician & Gynaecologist, private practices (present)
  • Consultant Obstetrician & Gynaecologist, Barnet Hospital, Royal Free NHS Foundation Trust (2010 - present)
  • Volunteer Obstetrician, Ethiopia (2007)
  • Clinical Research Fellow, Reproductive Medicine Unit, Fertility Unit of North Middlesex University Hospital (2001 - 2005)
View more

Subspecialties

  • Heavy periods
  • Infertility
  • Pelvic congestion syndrome
  • Fibroids
  • Ovarian cysts
  • Adenomyosis
  • PCOS
  • Asherman's syndrome
View more

Professional memberships

  • Royal College of Obstetricians and Gynaecologists
  • British Medical Association
  • Medical Defence Union
View more

Education

  • FRCOG, Fellow of Royal College of Obstetricians & Gynaecologists (2021)
  • Diploma in Clinical Risk Management, London University (2012)
  • Diploma in Gynaecological Endoscopy, The European Academy of Gynaecological Surgery (2014)
View more

Teaching posts

  • Co-convenor of the Annual Masterclass in the Management of Massive Postpartum Haemorrhage, RCOG, London (2013 - present)

Publications and conferences

  • Karoshi, M. A. (2004). Urine pregnancy test and intrauterine inseminations. The Lancet, 363(9406), 362.
  • Karoshi, M., & Yoong, W. (2004). Laparoscopic Filshie clip sterilization and selective use of the methylene blue dye test. International journal of fertility and women's medicine, 49(4), 165-166.
  • Karoshi, M., & Okolo, S. O. (2004). Commentary: Polycystic ovarian disease (PCOD): a misnomer, looking for a new name. International journal of fertility and women's medicine, 49(4), 191-192.
  • Abdelmagied, A., Karoshi, M., & Yoong, W. (2005). Egg on my face: an unusual way of reducing prolapse. Journal of obstetrics and gynaecology: the journal of the Institute of Obstetrics and Gynaecology, 25(2), 222.
  • Relph, S., Lawton, T., Broadbent, M., & Karoshi, M. (2016). Failed hysteroscopy and further management strategies. The Obstetrician & Gynaecologist, 18(1), 65-68.
  • Killicoat, K., Relph, S., Andersen, K., Patel, T., & Karoshi, M. (2017). Setting up a simulation workshop to assess blood loss in obstetrics. The Obstetrician & Gynaecologist, 19(4), 327-331.
View more

Prizes and awards

  • Bernhard Baron Travelling Fellowship from RCOG, London (2010)

Languages spoken

  • English
  • Spanish
  • Hindi
View more
Registration number: 5199074

Reviews

All reviews are from real patients and have been verified by our Customer Service department to ensure they meet our guidelines. Rules of the service

148 reviews

5.0

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  • Would you recommend this doctor?
  • Treatment of the doctor
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  • THE BEST doctor I've met in my life, he listened to my problem patiently and then explained me the cause of the problem and the solution as well.
    18 November 2025

    S.G.

    Verified patient
  • Mr Karoshi was incredibly kind and attentive. He was reassuring, thorough, and demonstrated a wonderful bedside manner. I feel very grateful for the superb care I received during my appointment with him.
    28 October 2025

    L.R.

    Verified patient
  • I highly recommend Dr Karoshi. He is extremely knowledgeable and always makes you feel at ease, explaining everything in simple terms in a way that the patient feels reassured.
    2 October 2025

    G.L.

    Verified patient
  • An exceptional service delivered with insight and professionalism.
    12 August 2025

    N.H.

    Verified patient
    Doctor's response -
    Thank you for your kind words. I’m pleased to hear that you felt well supported and that the care you received met your expectations. Wishing you all the very best on your health journey. Warm regards, Mr Karoshi
  • Mr Karoshi has been amazing throughout my time at his clinic, always taking the time to walk me through things to ensure I understand all options. Would recommend his services to any woman.
    3 August 2025

    J.M.

    Verified patient
    Doctor's response -
    Thank you so much for your kind and encouraging words. I’m glad to hear that my approach helped you feel informed and comfortable with your options. Best wishes Mr. Karoshi our recommendation means a great deal to me, and I remain committed to providing the best care for all my patients.
  • 5 stars to Dr Karoshi. He is extremely detailed in his investigations and is so very patient with his explanations.
    30 July 2025

    C.S.

    Verified patient
    Doctor's response -
    Thank you for your kind words and they mean a lot to me. Best wishes Mr. Karoshi
  • Dr Karoshi has been exceptional, he is very caring, knowledgable and passionate about helping people. He has been supportive with my plans of becoming a mum and was amazing for start to finish during my fibroid removal, I’m now looking forward to continuing my journey
    26 June 2025

    K.P.

    Verified patient
    Doctor's response -
    Thank you so much for your kind words and thoughtful review. I’m truly delighted to hear that you felt supported and cared for throughout your journey. It means a lot to me. Wishing you all the best as you continue on your path to motherhood. Best wishes. Mr. Karoshi
  • 26 June 2025

    K.P.

    Verified patient
  • I had an online consultation with Mr.Karoshi from the UAE regarding Sonata procedure for fibroid ablation. After the consultation I felt quite relieved as Mr.Karoshi thoroughly addressed all my concerns and helped me at every step. Highly recommend.
    3 June 2025

    Q.K.

    Verified patient
    Doctor's response -
    Thank you so much for your kind words! I am delighted to hear that your online consultation with me was reassuring and informative. It's wonderful to know that how I was able to address all your concerns and guide you through the details of the Sonata procedure. Your recommendation means a lot to me. Best wishes, Mr. Karoshi
  • Absolutely lucky to find mr Karoshi. Such caring and knowledgeable specialist . Would highly recommend.
    30 May 2025

    E.H.

    Verified patient
    Doctor's response -
    Thank you so much for your kind words! I am truly grateful for your trust and I am so pleased to hear about your positive experience. Your recommendation means a lot to me Best wishes Mr. Karoshi
View all reviews

Treatments

The doctor is expert in

Adenomyosis

Heavy periods

Infertility

Miscarriage

Ovarian cyst

Polycystic ovary syndrome (PCOS)

The doctor also specialises in:

Abnormal smear test

Amenorrhoea

Asherman's syndrome

Assisted reproductive technology

Bacterial vaginosis

Cervical cancer

Contraceptive methods

Cystitis

Endometrial polyps

Endometriosis

Frequently Asked Questions

What is Mr Mahantesh Karoshi's specialty?

Mr Mahantesh Karoshi is a consultant specialising in Obstetrics & Gynaecology, with extensive experience in assessing and treating patients within this field.

Which conditions and treatments does Mr Mahantesh Karoshi specialise in?

Mr Mahantesh Karoshi is a obstetrician & Gynaecologist who provides assessment and treatment for Ovarian cyst, Polycystic ovary syndrome (PCOS), Infertility, Miscarriage, Heavy periods and Adenomyosis. During your consultation, you will be informed of the most suitable options following a personalised evaluation.

How many years of experience does Mr Mahantesh Karoshi have?

Mr Mahantesh Karoshi has 16 years of professional experience as a consultant obstetrician & Gynaecologist, providing specialist assessment and treatment in this medical field.

What do patients say about Mr Mahantesh Karoshi?

Patients give a rating of 5.0 out of 5 to Mr Mahantesh Karoshi, a score considered excellent. This average is based on 148 verified patient reviews, reflecting the experience of those who have attended an appointment.

Are Mr Mahantesh Karoshi's reviews verified?

Yes. All Mr Mahantesh Karoshi's reviews come from verified patients who have attended either an in-person or an e-Consultation appointment. We use a system that ensures authenticity and prevents fake reviews. Some profiles may also display reviews from other platforms, which follow their own verification policies, with the source always clearly indicated.

Where does Mr Mahantesh Karoshi practise?

Mr Mahantesh Karoshi practices in the following locations:

  • W1G Marylebone London at 108 Harley Street
  • Central London at 12th Floor, Royal Free Hospital, Pond Street

In-person consultations are available at these locations as a Obstetrics & Gynaecology.

How can I book an appointment with Mr Mahantesh Karoshi?

You can book an appointment with Mr Mahantesh Karoshi directly from this page by selecting the time that suits you best. Alternatively, you can call the phone number shown if you prefer personalised assistance.

Does Mr Mahantesh Karoshi see NHS patients?

Many specialists featured on Top Doctors also hold NHS positions. However, appointments arranged for Mr Mahantesh Karoshi through this platform are private, either self-pay or covered by private medical insurance.

Does Mr Mahantesh Karoshi offer private appointments?

Yes, Mr Mahantesh Karoshi offers private appointments for patients seeking flexible and direct access to a consultant obstetrician & Gynaecologist.

Does Mr Mahantesh Karoshi offer online consultations?

Yes, Mr Mahantesh Karoshi offers online consultations. You can book an appointment directly from this page by selecting the date and time that suit you best. Personalised assistance is also available by calling the number displayed on this page.

Does Mr Mahantesh Karoshi accept insurance?

Mr Mahantesh Karoshi works with the following private medical insurance providers: Bupa, AXA, Cigna, WPA, Simply Health, Allianz, CS Healthcare, Vitality, The Exeter Friendly, Pru Health, Groupama, April, Freedom, National Assurance, General Medical, Saga, Healix, Legal & General Insurance, Health-online, Benenden Health , Alliance Health Group and Aetna. If your insurer is not listed, you may contact the practice directly to confirm your coverage.

What is Mr Mahantesh Karoshi's availability?

Mr Mahantesh Karoshi's availability depends on the appointment slots open at any given time. On this page, you can check current availability, and if no slots are shown, you can request an appointment or contact the practice directly.

What payment methods does Mr Mahantesh Karoshi offer?

You can pay for your consultation with Mr Mahantesh Karoshi using the following methods: Self-paying.

What languages does Mr Mahantesh Karoshi speak?

Mr Mahantesh Karoshi is a obstetrician & Gynaecologist who offers consultations in English, Spanish and Hindi.

How is Mr Mahantesh Karoshi selected to appear on this platform?

All doctors listed on Top Doctors, including Mr Mahantesh Karoshi, undergo our rigorous selection process. Only one in five specialists meets the required standards to be included.
Discover Top Doctors' rigorous medical selection process.
The doctor, or where applicable the hospital or medical centre in which the doctor provides services, undertakes to keep the information relating to the prices of services published on their profile on the Top Doctors platform up to date at all times, ensuring that such prices correspond to those effectively charged to patients. In the event of any discrepancy between the published price and the price ultimately charged to the patient, the doctor and/or the relevant hospital or medical centre shall be solely liable towards the patient and towards Top Doctors for any claim or financial difference arising therefrom.

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108 Harley Street MedicalW1G Marylebone London, 108 Harley Street, W1G 7ET
Payment methodSelf-paying
Face-to-faceFirst visit Consultant Gynaecologist
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