Current NHS attendance transformed and rising (2,3,9)
I believe the answer is:
in the ascendant
'rising' is the definition.
(thesaurus)
'current nhs attendance transformed' is the wordplay.
'current' becomes 'I' (physics symbol).
'transformed' is an anagram indicator.
'nhs'+'attendance'='nhsattendance'
'nhsattendance' is an anagram of 'ntheascendant'.
'i'+'ntheascendant'='IN THE ASCENDANT'
'and' acts as a link.
(Other definitions for in the ascendant that I've seen before include "on the way up" , "becoming more influential - with 23a" .)