coined the term "hospitalist" and predicted an "emerging role in the American health care system." 1 Pediatrics was not far behind: In 1999, Dr Wachter joined Paul Bellet, MD, in authoring an article describing the movement within pediatrics. 2 An accompanying editorial, coauthored by a pediatric hospitalist and an office-based practitioner, attempted to answer which was "better" for a hospitalized child: A practitioner who knew the child and family or a hospitalist who might be more knowledgeable about the disease, its inpatient management, and how to get things done in the hospital? 3 The authors could not answer which model was better for an individual child with an invested primary pediatrician, but concluded that hospitalists have the potential to improve care for all children in the hospital-the future promise of Pediatric Hospital Medicine (PHM). This article traces the growth of PHM from 1996 to the present, highlighting developments that fueled the hospital movement in general and PHM in particular (Table).