Welcome Baby is a voluntary, locally designed home visiting program that was developed as part of First 5 LA’s Family Strengthening investment supporting families with children from before birth to age five. To assess the effects of the Welcome Baby program, the Urban Institute and its partner, the University of California, Los Angeles, conducted a six-year mixed methods evaluation of the home visiting program. This paper provides results from a substudy of the larger evaluation, which examines the outcomes of the program on women and infants enrolled in Medi-Cal. The substudy uses Medi-Cal data linked to the survey records for women who participated in the overall evaluation.