Over the past decade, a newer class of interventions has emerged specifically designed for young children with or at high likelihood of autism, which are called Naturalistic Developmental Behavioral Interventions (NDBIs). NDBIs are particularly well-suited as a discipline agnostic, primary intervention for young children with autism and other social communication challenges; however, community providers from multiple disciplinary backgrounds who serve these children typically do not develop competencies in areas crucial for effectively implementing NDBI. The goal of this commentary is to: (a) describe the interdisciplinary competencies needed to deliver NDBIs effectively and (b) provide recommendations for moving the field of early intervention for autism and social communication delays forward. Resources for building these competencies for providers at the pre- and in-service level are also provided.