In some pain, sure doctor had it covered (7)
I believe the answer is:
insured
'covered' is the definition.
(covered by insurance)
'in some pain sure doctor' is the wordplay.
'in' indicates a hidden word.
'INSURED' can be found hidden inside 'some pain sure doctor'.
'had it' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for insured that I've seen before include "Covered for losses" , "Covered, maybe against damage to 23 ..." , "Covered for loss" , "Covered against accident" , "Protected against loss" .)