The document summarizes a tweet chat called #PrescribeDesign that brought together design professionals and healthcare professionals to discuss challenges and opportunities for improving healthcare through design. The tweet chat included questions about organizations doing innovative healthcare design, barriers to adoption of design in healthcare, how designers and healthcare professionals can better collaborate, and ideas for future collaboration. Key themes included the need for user-centered healthcare systems and services, better communication and information design, addressing mental health, and including more diverse perspectives in healthcare design.