MEDNAX, Inc., together with its subsidiaries, provides newborn, maternal-fetal, pediatric subspecialties, and anesthesia care physician services in the United States and Puerto Rico. It offers neonatal care services, including clinical care to babies born prematurely or with complications within specific units at hospitals through neonatal physician subspecialists, neonatal nurse practitioners, and other pediatric clinicians. The company also provides maternal-fetal care services comprising outpatient and inpatient clinical care to expectant mothers and their unborn babies through affiliated maternal-fetal medicine subspecialists, obstetricians, and other clinicians, such as maternal-fetal nurse practitioners, certified nurse mid-wives, ultrasonographers, and genetic counselors. Its pediatric cardiology care services consist of inpatient and outpatient pediatric cardiology care of the fetus, infant, child, and adolescent patients with congenital heart defects and acquired heart disease, as well as adults with congenital heart defects; and other pediatric subspecialty care services include care of critically ill or injured children and adolescents; and clinical services in other areas of hospitals, primarily in labor and delivery area, and newborn nursery and pediatric department. In addition, the company provides anesthesia care services through physician anesthesiologists, nurse anesthetists, and anesthesia assistants; and acute and chronic pain management services through outpatient medical offices, hospital clinics, and ambulatory service centers. MEDNAX, Inc. was founded in 1979 and is based in Sunrise, Florida.