Hiya Paul & Jacky,
I first thought you meant the chap at the Income tax office - whose name is M Moret, but on reading your post again, I see that's not what you asked!
I don't know the name of the English speaker at the CPAM office but take ALL your personal paperwork plus proof that you have a permanent address here (electric bill or similar) and tell the lady on reception (the desk is opposite the door as you enter) that you want to apply for a carte vitale. She will hand you a piece of paper which you will hand to the clerk who sees you - it has your time of arrival on it and the clerk enters the time she deals with you and keeps it.
Reception will usher you through the double glass doors to the right and you go and take a seat slightly to the right of you and opposite three small offices with glass panels. Their doors are usually open.
In case your nerves play up at this point - there are loos in the block to the right of where you're sitting (or to the left as you walk through the double glass doors)!!
You just sit and wait for the next clerk to finish with her current client then go in and sit down at her desk.
If you tell her that you need to speak English, she will either do so herself or contact the colleague who can and you will probably be asked to go back and sit down until she is free.
Good luck. It isn't at all traumatic and we have found that they are always very pleasant and very helpful and I don't think that we have ever had to wait longer than ten minutes to be seen..
You will be given a temporary attestation to serve until your cards arrive by post. If you are likely to be going to the UK on a visit, you may as well ask for your European health cards at the same time.