The National Association Medical Staff Services (NAMSS) is committed to enhancing the professional development of and recognition for professionals in the medical staff and credentialing services field. Over more than four decades, the medical services profession has evolved into a true career that spans a wide range of employment settings and requires a specific knowledge base and professional competencies. The NAMSS membership includes more than 6,000 medical staff and credentialing services professionals (MSPs) from medical group practices, hospitals, managed care organizations, and CVOs.