The transition of Internationally Educated Nurses (IENs) into U.S. healthcare systems is a complex process shaped by clinical, professional, and cultural adaptation, as well as the conditions of the practice environment. Transition-to-practice (TTP) programs vary across organizations, underscoring the importance of structured, standardized, and coordinated support. This SIENNA White Paper introduces the Preparation-Integration-Transition-Consolidation-Heightening (PITCH) IEN TTP Model™ as a competency-based framework that guides progression from preparation through long-term professional development. The model emphasizes flexible, competency-driven advancement supported by mentorship, preceptorship, and organizational readiness. Findings underscore that successful integration depends on coordinated organizational strategies, supportive practice environments, and sustained investment in professional development. The PITCH IEN TTP Model™ provides a practical framework to strengthen workforce integration, retention, and overall healthcare system capacity. FREE Download for SIENNA Ambassadors.