This qualitative research explores interprofessional learning among health students within a mental health outpatient setting. The focus is on how they manage to establish a boundary-crossing community of practice. Six final year students from medicine, occupational, and physical therapy, divided into two groups, visited elderly clients living at home on two occasions. Based on an assessment of the client, they had to consider suitable health and social initiatives to enhance quality of life, health outcomes, and wellbeing. The students then had to produce a jointly written health record documenting their professional and interprofessional evaluations. Two facilitators participated in the home visits and documented them through field notes. Focus group interviews conducted before and after the home visits and at the final seminar, together with health record documents, were audio-taped, coded, and thematically analyzed. Iterative reflexive analysis combined the findings with relevant research and theory from social and experiential learning. The findings show how boundary-crossing strengthened client-centeredness and students' knowledgeability, and how the intervention became more beneficial and qualitative. New insights were obtained from reflecting on and discussing professional stereotypes, identity, and roles. Writing the health record together enabled the students to reach a common ground.