National Enrolment Service (NES) Jan 19 2017 We are now participating in the Ministry of Health National Enrolment Service (NES). This includes checking that we have your most recent details so we can confirm that we have your correct NHI (National Health Index) number. The Ministry of Health requires us to verify all details and proof of identity (drivers licence, passport), and to determine each person's eligibility for funded health care. Please don't be offended if we ask you to confirm your details or ask for your photo ID. All patients enrolling are asked to bring their passport and eligibility documents (resident or work visa).