Incarceration of hospital doctor (name concealed by police) (10)
I believe the answer is:
internment
'incarceration' is the definition.
(I know that internment is a type of incarceration)
'hospital doctor name concealed by police' is the wordplay.
'hospital doctor' becomes 'intern' (trainee doctor).
'name' becomes 'n' (common abbreviation e.g. on forms).
'concealed by' indicates putting letters inside.
'police' becomes 'met' (London Metropolitan Police).
'n' put within 'met' is 'ment'.
'intern'+'ment'='INTERNMENT'
'of' acts as a link.
(Other definitions for internment that I've seen before include "Precautionary measure" , "Locking up" , "Confinement of an enemy national" , "Detention" , "Committal" .)