Master in a hurry becoming new resident of hospital (2-7)

'a hurry becoming new resident of hospital' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'master in' is the wordplay.
I cannot really understand how this works, but
'in' is within the answer.
The remaining letters 'patient' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).