Doctor embraces home care (4)
I believe the answer is:
mind
'care' is the definition.
(thesaurus)
'doctor embraces home' is the wordplay.
'doctor' becomes 'md' ('MD' can be a synonym of 'doctor'**).
'embraces' is an insertion indicator.
'home' becomes 'in' ('he's home' can mean 'he's in').
'md' placed around 'in' is 'MIND'.
(Other definitions for mind that I've seen before include "Take care of; intellect" , "Take offence (at)" , "Object to; take care of" , "remember" , "'Out of sight, out of ....'" .)