Nikki is an academic General Practitioner and Director of the Immunisation Advisory Centre, University of Auckland. Nikki's interests are in immunisation, equity and primary health care. She works part time as a General Practitioner at NUHS Broadway Clinic in Wellington.
She has been a member of the World Health Organization Strategic Advisory Group of Experts (SAGE) on Immunization and Chair of the SAGE Working Group on Measles and Rubella elimination. She represents the RNZCGP (College of General Practitioners) in child health interests, and is a health spokesperson for the Child Poverty Action Group.