The group's principal activity is to provide neonatal and perinatal physician services. These services are provided at hospital-based neonatal intensive care units (nicus) and pediatric intensive care units (picus). Nicus are staffed by neonatologists, who are pediatricians with additional training to care for newborn infants with low birth weight and other medical complications. Perinatal physician services are provided by perinatologists, who are obstetricians with additional training to care for women with high risk and complicated pregnancies and their fetuses. The group provided services in certain states and in Puerto Rico. These services are provided by 622 practicing physicians. The group also provides staff and manages nicus and picus in hospitals; provides physicians and professional and administrative support, including physician billing and reimbursement services.
