thank you for your question:
1. As for your question on Croatia- it is a EU member state, therefore the DUBLIN Regulation applies.
2. In Paris the city is managing everything directly- however there is the NGO Emmaüs that facilitates all the operational tasks for the city. In order to find out about your question please contact them directly:
14, rue Jules Vanzuppe
You can get medical assistance but first of all you need to register yourself as an asylum seeker and then they will allocate you to a address somewhere in France- so you cannot choose which city.
I hope I could assist you, if you need further guidance please do not hesitate to reach out to us.