Pediatrix Medical Group, Inc. is a provider of physician services at hospital-based neonatal intensive care units (NICUs). NICUs are staffed by neonatologists, who are pediatricians with additional training to care for newborn infants with low birth weight and other medical complications. In addition, the Company is a provider of perinatal physician services. Perinatologists are obstetricians with additional training to care for women with high risk and/or complicated pregnancies and their fetuses. The Company also provides physician services at hospital-based pediatric intensive care units and pediatrics departments in hospitals. On May 15, 2001, the Company acquired Magella Healthcare Corporation (Magella) pursuant to a merger transaction. As a result of the merger, Magella became a wholly owned subsidiary of Pediatrix.