From the American College of Physicians:
"As the national organization for internal medicine specialists and subspecialists, the American College of Physicians (ACP) has a stated mission “to enhance the quality and effectiveness of health care by fostering excellence and professionalism in the practice of medicine.” In supporting this mission, ACP recognizes the importance of certification and the professional responsibility of physicians for maintaining competence and for continuous professional development throughout their career.
Although ACP therefore encourages participation in the American Board of Internal Medicine’s Maintenance of Certification (MOC) program, it also understands the limitations of applying the current MOC process as the sole criterion to identify and recognize competence and quality of care provided by internal medicine specialists and subspecialists in their highly diverse professional roles and activities. As a result, ACP does not support using participation in MOC as an absolute prerequisite for state licensure, hospital credentialing, or insurer credentialing. Instead, decisions about licensure and credentialing should be based on the physician’s performance in his or her practice setting and a broader set of criteria for assessing competence, professionalism, commitment to continuous professional development, and quality of care provided. By understanding that a wide variety of attributes contribute to a physician’s competence and quality of care, ACP stresses that the physician’s demonstrated performance for providing high quality, compassionate care and his or her commitment to continuous professional development should be the primary determinants for licensure and credentialing. Participation in MOC can be one factor providing evidence of quality and commitment to continuous professional development, but it is not the only one."