My passport name and birth certificate do not match. Is this important for a carte vitale to be issued?

Hello Geraldine.

Thank you for your message. That is so helpful. Much appreciated.

Good morning. I had a response from Geraldine which i found very helpful. However, when I looked into the possibility of the Certificat de Concordance I was told that it was only a form for if there was a mistake on the birth certificate, therefore didn't apply to me. My problem is that my birth certificate does not include an additional prenom which is on my passport, a name which I have used for over 70 years. Can anyone advise please?

Any update about this issue please?

Thanks for your answer, I send all the relevant files including the certificate of concordance issued by the embassy of my country by mail 2 weeks ago to the CPAM.

Do you have any idea how long it takes to issue the social security number in this case? Because I need it for an internship procedure.