What does ward No mean [closed]
Solution 1:
As pointed out in comments, No. is a common abbreviation for "number".
Having done a little online research I have the following suggestion.
In some hospitals (especially private hospitals) each patient may be assigned a separate room. Presumably each room on such a ward needs a separate number.
Therefore I conclude that this is effectively an address, i.e.
Room Number 6, Bracken Ward.
I'm open to correction from the OP if this is incorrect.