No.  In fact, most people are surprised to learn that the AMA is a voluntary organization whose membership comprises a minority of the physicians in the United States.  The AMA does not certify, discipline, or credential the training or clinical skills of physicians.  For the most part, the AMA focuses on lobbying at the federal level for legislation of interest to some physicians, and it also publishes some scholarly journals and treatises.  In addition, the AMA has not been active in producing the clinical practice guidelines that define minimal standards of patient care.