The maternal-fetal medicine (MFM) specialist is a member of the health care team who possesses expertise in the management of the high-risk pregnancy. The MFM specialist has advanced knowledge of obstetric, medical, genetic, and surgical complications of pregnancy and the effects of complications on the mother, fetus, and newborn. The MFMspecialist may function as consultant, comanager, or direct care provider and may be equally comfortable in antepartum ambulatory, inpatient obstetric, and critical care settings. As the female population increases, the number of MFM specialists also is expected to grow.