Partner engagement is critical for embedded pragmatic research, yet few structured methods guide early collaboration to strengthen feasibility and mutual understanding. In this case study, Brown University researchers and leaders from a US-based medical practice, Bluestone Physician Services, used the readiness assessment for pragmatic trials (RAPT) model to guide structured discussion and qualitative readiness assessment of a partner-identified intervention concept aimed at improving the timing of palliative care services. Collaborative completion of RAPT created a shared process for assessing feasibility, contextual fit, and alignment with Bluestone priorities. The exercise identified domains needing refinement and guided planning to strengthen data, workflows, and measurement, demonstrating that RAPT can serve as a practical framework for early-stage co-design in pragmatic research.