The most common and most likely answer to this crossword clue is the 9 letter word PHYSICIAN
P
H
Y
S
I
C
I
A
N
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PHYSICIAN mean?
PHYSICIAN noun- A practitioner of physic, i.e. a specialist in internal medicine, especially as opposed to a surgeon; a practitioner who treats with medication rather than with surgery.
- A medical doctor trained in human medicine.