Intervals at home: time to visit our doctors and nurses? (6)
I believe the answer is:
ninths
'intervals' is the definition.
(I've seen this before)
'home? time to visit our doctors and nurses' is the wordplay.
'home?' becomes 'in' ('he's home' can mean 'he's in').
'time' becomes 't' (abbreviation).
'to visit' indicates putting letters inside.
'our doctors and nurses' becomes 'NHS' (National Health Service).
'in'+'t'='int'
'int' going within 'nhs' is 'NINTHS'.
'at' acts as a link.
(Other definitions for ninths that I've seen before include "Intervals of just over an octave" , "There are 7 of these parts in 63, say" .)