NAMSS is committed to enhancing the professional development of and recognition for professionals in the medical staff and credentialing services field. The medical services profession has evolved over the past 41 years to where we are today - a true profession 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 from medical group practices, hospitals, managed care organizations, and CVOs.