Out of 200 of the most populous U.S. counties, Philadelphia has the fifth highest infant mortality rate. Keystone First partnered with Verizon Wireless to launch Moms2B—a program providing free cell phones and minutes to directly engage Keystone First’s high-risk pregnant Medicaid members. The goals are to improve prenatal care and health outcomes, and keep members connected to the plan’s Bright Start® maternity program. The Bright Start Care Management team contacted participants on the cell phones to provide coaching and care coordination during pregnancy and postpartum. Participants also received text messages with nutritional and clinical information specific to gestational age. In addition, they received encouragement and gift incentives to maintain scheduled prenatal/postpartum care, along with information about screenings, and educational and community-based programs. Seventeen participants actively engaged in Moms2B (intervention group: IG) were risk-matched to 17 nonparticipating high-risk pregnant members (control group: CG). Matching variables included age group (<18, 18–34, 35+), race, ethnicity, number of high-risk diagnosis codes, and zip codes. High-risk diagnoses—including prior history of preterm delivery, insulin-dependent diabetes, hypertension, multiple gestations, and incompetent cervix—are known predictors of low birth weight and premature delivery. Thirty-one participants at high-risk for premature delivery received cell phones and text-messaging services. Twenty-six mothers (84%) successfully delivered babies to term (<31 days from expected delivery date). Babies born in the IG had higher birth weights than those born in the CG (mean, 38.71g), lower rates of low birth weight babies (-0.12%) and very low birth weight babies (-0.06%), and delivered almost a full week later (mean, 0.96 wk). Participants reported high program-satisfaction rates. Members at high risk for preterm delivery participating in Moms2B had superior pregnancy outcomes compared to nonparticipants; program satisfaction was favorable.