Drs. Cleave et al viewed the impact of the 2007 Mass Medicaid’s requirement for use of quality screening tools in primary care in order to best identify children with developmental-behavioral/mental health problems. Providers were motivated to comply with the mandate and most practices reported implementing screens routinely, whether for Medicaid patients or not, i.e., practices found it easiest to establish a consistent process across well-visits regardless of insurance). PEDS^® together with the M-CHAT were the most commonly selected measures due to their brevity and numerous translations (both are included in PEDS Online^®). The authors conclude that mandates are an effective way to improve evidence-based practice but that: a) physician champions are needed to promote solutions to implementation; and b) referral coordination and service capacity building are needed to make sure that children identified by screens receive intervention.