J’espère ne pas m’être trompé de Docteur XXX.
I'm about to send a business-related email to someone for the first time, and at the beginning of a message, I want to include a sentence to check to see if I have reached the right person.
Normally, you'd place a noun such as "numéro":
J’espère ne pas m’être trompé de numéro.
... but is it acceptable to put a person's name there instead?