A national database maintained by the U.S. Department of Health and Human Services shows that 40 percent of all disciplinary actions against Massachusetts doctors over the past decade, for a total of 118, involved incidents in nursing homes, medical clinics, and managed care facilities. As this is not about patient care in hospitals, these disciplinary measures are not listed in the public profiles of physicians. Other mistakes are more confusing. Sixteen years ago, it seemed that Dr. Scott S. . .