As America's health care system continues to transform, the foundational importance of primary care becomes more clear. The Joint Principles of the Patient Centered Medical Home are now more than a decade old. As delivery reform continues, the importance of seven essential shared principles have emerged from a dynamic, collaborative, and iterative process of consensus building across multiple stakeholders. These seven principles will help the public, policy makers, payers, physicians, and other clinical providers speak with a unified voice about these core principles that define the enduring essence and value of primary care. The seven shared principles of primary care consist of: (1) person and family centered, (2) continuous, (3) comprehensive and equitable, (4) team based and collaborative, (5) coordinated and integrated, (6) accessible, and (7) high value. When used together, these shared principles provide a solid platform on which to build all further health care reform.