Navigating Boundaries: How Pharmacists Develop Their Clinical Identity in a Complex Multidisciplinary Healthcare Setting.

Introduction: Clinical pharmacists are crucial for optimizing medication therapy and improving patient outcomes, yet their potential is underutilized in many low- to middle-income countries. Shifting from traditional dispensing to clinical roles requires professional development and identity transformation. In South Africa's public healthcare system, this shift faces additional challenges, such as a lack of formal positions, limited resources, and role ambiguity. Understanding how clinical pharmacists navigate this transition and develop their clinical identity is essential for their integration into healthcare teams and for improving patient care. Methods: Using a constructivist approach, this qualitative study employed semi-structured interviews with clinical pharmacists (n = 12) across South Africa's public healthcare sector. We analyzed data through the lens of boundary crossing. Through thematic analysis we explored how pharmacists navigate the complexities of transitioning from dispensing to broader clinical roles, and how these experiences shape their professional identity. Results: Clinical pharmacists navigated both intrapersonal and interpersonal boundaries in their evolving roles. Three key themes were identified: (a) Bridging the gap within: Pharmacists navigate intrapersonal boundaries for clinical identity formation, (b) Bridging the gap between: Pharmacists navigate interprofessional boundaries for collaboration and identity formation, and (c) Building bridges: Pharmacists employ strategies to promote collaboration and recognition. Discussion: This study uncovered the complex interplay between intrapersonal boundaries - such as role ambiguity, self-doubt, reconciling traditional dispensing roles with expanded clinical responsibilities, and the need for mentorship - and interpersonal boundaries, including hierarchical structures, unclear role expectations, limited recognition, and challenges in interprofessional collaboration, in shaping clinical pharmacists' identities. Fostering boundary crossing competence and interprofessional collaboration can help overcome systemic barriers, enabling pharmacists to navigate their roles, advocate for their expertise, and gain recognition within healthcare teams, ultimately enhancing their integration and improving patient care in resource-constrained settings like South Africa.