Buries a doctor in pulverised stone (7)
I believe the answer is:
entombs
'buries' is the definition.
('entomb' can be a synonym of 'bury')
'a doctor in pulverised stone' is the wordplay.
'a doctor' becomes 'mb' (abbreviation for Bachelor of Medicine).
'in' indicates putting letters inside.
'pulverised' indicates anagramming the letters.
'stone' anagrammed gives 'entos'.
'mb' inserted inside 'entos' is 'ENTOMBS'.
(Other definitions for entombs that I've seen before include "Buries" , "sepulchres" .)