Indian drink provided by medical assistant (5)
I believe the answer is:
lassi
'indian drink' is the definition.
(I've seen this before)
'provided by medical assistant' is the wordplay.
'provided by' indicates the answer is hidden within the clue (the answer is provided within the clue).
'LASSI' is hidden within 'medical assistant'.
(Other definitions for lassi that I've seen before include "creamy drink" , "chilled drink" , "drink in India" , "that Indian necks?" , "Indian yogurt drink" .)