Falsify a medic (6)
I believe the answer is:
doctor
I believe this clue is a double definition.
'falsify' is the first definition.
(thesaurus)
'a medic' is the second definition.
(thesaurus)
(Other definitions for doctor that I've seen before include "Foster, Who, Jekyll or Livingstone" , "Tamper with - falsify - one of the 14 films" , "Onshore breeze" , "Medical worker or holder of highest university degree" , "19 [WHO] , say" .)