Editor's note: This article is the last in our series aimed at providing medical staffs with information to adequately measure the six core competencies to assess physician competence. When the The Joint Commission adopted the six core competencies-which were originally developed by the Accreditation Council for Graduate Medical Education-it failed to specify which expectations would provide the basis to measure competency. "In other words, it laid the foundation but left people in the field to build the rest of the house," says Robert Marder, MD, CMSL, vice president of The Greeley Company, a division of HCPro, Inc., in Marblehead, MA.