Needing treatment let's try here — a medical hub! (6,6)
I believe the answer is:
harley street
'medical hub' is the definition.
The definition suggests a singular noun which matches the answer.
'needing treatment let's try here a' is the wordplay.
'let's try here a' anagrams to 'HARLEY STREET'.
However, I'm not clear how the anagram is indicated.
Can you help me to learn more?
(Other definitions for harley street that I've seen before include "On which many doctors" , "private health here" , "London thoroughfare famed for medical specialists" , "Top doctors' address" , "London thoroughfare famed for doctors" .)