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John Lynn : Consultant Endocrine Surgeon, Harley Street

John Lynn

Consultant Endocrine surgeon with special interest in using minimally invasive surgery for the following conditions where appropriate: endocrine tumours, thyroid disease, parathyroid disease, paediatric endocrine surgery, re-operative endocrine surgery

Mr John A Lynn is a Consultant Endocrine Surgeon who practises privately at 9 Harley Street in London.

As the head of the Endocrine Surgery Centre, Mr Lynn leads a team in the provision of the full range of minimally invasive endocrine surgery

For the past 20 years he has provided a comprehensive service for Cromwell Hospital in the surgical management of thyroid, parathyroid, adrenal and pancreatic endocrine disease. For 27 years he was also the Head of Endocrine Surgery at the Royal Postgraduate Medical School, now the Imperial College of Science, Technology and Medicine, Hammersmith Hospitals NHS Trust in London.

He qualified from Kings College Hospital, London in 1964 and obtained his Fellowship of the Royal College of Surgeons in 1971. He has had extensive surgical training as a Senior Registrar at the Westminster Hospital, London and spent 18 months with Dr Richard Egdahl at the Boston University Medical Centre.

Mr Lynn operated on 370 endocrine patients from September 2004 to September 2005.

He has published extensively and has worked for 20 years with the Endocrine Pathologist Dr Paul Lewis and a team of Endocrinologists, Radiologists and Anaesthetists who have a special interest in endocrine tumours.

Mr Lynn has had an interest in endocrine surgery for some 25 years. His special interests are the medical and surgical treatment of thyroid disease, the management of parathyroid disease and re-operative surgery. He has special expertise in the management of endocrine tumours of the pancreas and of benign and malignant tumours of the adrenal including functional tumours such as phaeochromocytoma, Cushing's and Conn's tumours.

For the last 20 years Mr Lynn has trained over 20 surgeons who have developed either a part or full-time interest in endocrine surgery.

Mr Lynn was a founder member of the British Endocrine Society, now the British Association of Endocrine and Thyroid Surgeons. He has led the development of minimally invasive techniques in endocrine surgery, and pioneered the use of intraoperative parathyroid hormone assay and protection of the voice by the use of intraoperative nerve stimulation. He feels the use of nerve monitoring in thyroid and parathyroid surgery is mandatory in the management of patients such as singers and actors for whom a perfect or near perfect voice is essential.

His practice is now 95% endocrine surgery.


There are a number of different finance packages for different operations, details of which are available upon request.

All major insurance plans are accepted, although some restrictions may apply with the level of coverage by some insurance companies. If in any doubt, check with your insurer.

For those patients without health insurance an accurate fee will be set and honoured, although in exceptional circumstances modifications might need to be made.

In all cases, detailed reports will be provided to all referring doctors during reviews as an outpatient in the follow-up period.


Referrals should be directed by letter or fax from your GP or other doctor to Mr Lynn's secretary. Subsequent to an appointment being confirmed, details of your medical history and copies of all relevant investigations performed should be provided, translated into English if applicable. Please do NOT send such details until an appointment has been confirmed.


Visit Harley Street


  • Endocrine tumours
  • Thyroid disease
  • Parathyroid disease
  • Paediatric endocrine surgery
  • Re-operative endocrine surgery


  • Qualified from Kings College Hospital, London
  • Fellowship of the Royal College of Surgeons
  • Extensive surgical training as a Senior Registrar at the Westminster Hospital, London


9 Harley Street, London, W1G 9QY



9 Harley Street, London, W1G 9QY

Appointments: +44(0)20 7079 2100

Practice Phone(24 hrs): +44(0)7836285832

Fax: +44(0)20 8946 1066

Emergency Mobile: +44(0)7889046346

Email: john.lynn@endocrinesurgeon.co.uk

Web: www.endocrinesurgeon.co.uk 


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