You can call for an appointment at: 020-6713389 (also in urgent!)
The center is open every workingday from 8:00 to 17:00.
Outside office hours (from 17:00 to 8:00, on weekends and public holidays), you can call the following number for the attending doctors and the medical center in your area.
Phone number: 088 00 30 600 (also in urgent!)