The website dedicated to medically assisted procreation launched by the Agence de la biomédecine (French Biomedicine Agency): https://www.procreation-medicale.fr gives you access to a directory of all the centers in France.
By entering the zip code for your département, you will be taken to the page presenting the center(s) closest to your home, with their e-mail and telephone contact details, enabling you to make an initial appointment for information with the center's medical team.