Although vaccinations are among the most effective preventive public health measures available, many children are not vaccinated on time (1). One identified barrier to timely vaccination is referral of children by primary-care physicians to other medical settings for vaccination (2). This report summarizes a survey by the New York State Department of Health of vaccination referral practices among New York physicians and describes the implementation in New York of Vaccines for Children (VFC), a national program making federally purchased vaccines available at no cost to healthcare providers for administration to eligible children (3).