To this end, the investigators will use a stepped-wedge QI trial design to serially introduce the hospitalist program in all 4 inpatient services at CMHH currently staffed by primary care pediatricians from the General Pediatric Division. The researchers have chosen to use this design because it allows partial adjustment for any important temporal changes that may occur unrelated to the intervention, and facilitates a more rigorous assessment of treatment effects than the usual pre- and post-intervention comparisons, while also allowing the investigators to start the project quickly with the available faculty and to focus on optimizing hospitalist care in each service successively.