Everyone registered with the National Health Service (NHS) in England, Wales and the Isle of Man has a unique patient identifier called an NHS Number. The modern style of NHS number was generally introduced in 1996 and one allocated to every newborn since July 1995 and becoming mandatory on 1 April 1997.
The NHS Number helps healthcare staff and service providers identify you correctly and match your details to your health records. The number will appear on most official documents.
Each NHS Number consists of up to 10 digits shown in a 3-3-4 format. Those having NHS numbers following in the format XXXX 999 are no longer valid.
In the NHS example above "9434765919" is used for the following below validation.