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Background: Although proven effective interventions for childhood obesity exist, there remains a substantial gap in the adoption of recommended practices by clinicians.Objective: The aims are to: (1) package implementation and training supports to facilitate the adoption of the evidence-based Healthy Weight Clinic Pediatric Weight Management Intervention (PWMI) (based on three previous effectiveness trials); (2) pilot and evaluate the packaged Healthy Weight Clinic PWMI; and (3) develop a sustainability and dissemination plan.Design/Methods: We used the Consolidated Framework of Implementation Research constructs to create an Implementation Research Logic Model that defined the facilitators and barriers of the Healthy Weight Clinic PWMI. We linked these constructs to implementation strategies and mechanisms. Packaging and design will be informed by the core essential components and functions of the PWMI along with stakeholder engagement. Once the package is complete, we will pilot the PWMI by using a Type III effectiveness-implementation hybrid design. Implementation outcomes will be evaluated by using the RE-AIM framework.Results: We will create an integrated, multisystems level package for national dissemination. The package will include training and a suite of resources for primary care physicians and healthy weight clinic staff, including: patient and caregiver facing videos, patient and caregiver handouts, group curriculum guide, online provider trainings, and access to a virtual learning collaborative. Conclusion:The results will highlight the extent to which the package of the Healthy Weight Clinic PWMI facilitates the adoption of effective strategies for treating childhood obesity. Lessons learned will inform modifications to the Healthy Weight Clinic PWMI and strategies for future scaling.

Background: Despite evidence that offering multidisciplinary treatment for children with obesity is effective, access to evidencebased pediatric weight management interventions (PWMIs) is limited. The Healthy Weight Clinic PWMI is a multidisciplinary approach in primary care that improves BMI among children with a BMI ‡ 85th percentile.Objective: To describe the method by which we will evaluate the adoption, acceptability, and feasibility of integrating and implementing a multidisciplinary Healthy Weight Clinic (HWC) into primary care.Design/Methods: We used the Consolidated Framework for Implementation Research (CFIR) domains and constructs to inform our implementation strategies. We will use a Type III hybrid effectiveness-implementation design to test our implementation strategies and improvement in BMI. Sources of data collection will include qualitative interviews with patient caregivers, HWC staff and surveys with HWC staff, patient caregivers, and electronic health record data. Our outcomes are guided by the Reach Effectiveness Adoption Implementation Maintenance (RE-AIM) framework.Results: We identified all five CFIR domains as integral for successful implementation. Some strategies to address barriers within these domains include online self-paced training modules for the HWC staff, a virtual learning collaborative, and engagement of site leadership. Outcomes will be measured at the patient and pilot site levels, and they will include patients reached, patient health outcomes such as BMI and quality of life, level of adoption, acceptability, feasibility, and sustainability of the PWMI.Conclusion: Our use of implementation science frameworks in the planning of Healthy Weight Clinic PWMI could create a sustainable and effective program for dissemination.