Welcome to the National Diabetes Services Scheme (NDSS). We will use your contact details to send you important information. Preferences Do you have a preference for how we contact you? You can choose to receive NDSS communications by: email SMS or by telephone. Save time by contacting us online with My NDSS or call the NDSS Helpline on 1800 637 700. Opting-out If you wish to opt-out entirely from receiving NDSS communications, please contact the NDSS Helpline on 1800 637 700. Please note that we may still contact you about critical updates, even if you have opted-out.