In 1386 providers, better teamwork related to higher patient Net Promoter Score (NPS), and the relationship between provider experience and NPS was mediated by teamwork. Objectives: We previously described a 6-item teamwork index (TEAM) with a strong relationship to provider experience, lower burnout, and intent to stay. We now sought to determine whether (1) TEAM relates to higher patient Net Promoter Score (NPS, or likelihood of patient referring to the organization) and (2) teamwork mediates a provider experience–NPS relationship.