If I remember well what they told me when you come day time (and there are no major issue/emergency) go to their registration office ground floor and they will assist you and bring you to your room, if you arrive by night, registration office will be closed so go directly through the emergencies.

But my doctor was working in Al Ahli so we were going very often the last weeks for check up and they had all my medical record with them. The procedures may be different if your doctor is not in Al Ahli.

I would advice you to go again to Al Ahli, to validate everything with the lady from the registration office, to check what documents they need/will need from you (official documents / medical records / birth plan if you have one...)

Good luck for everything!