<qa>  How many primary care clinics will be evaluated?Dr. Karsh and his research team will test an intervention to improve the performance of primary care physicians and, thus the safety of primary care of the elderly. The investigators will use a randomized experiment, with random assignment at the level of patient, to test and evaluate the intervention. The evaluation will involve 4 primary care clinics, with 4 primary care physicians per clinic. The investigators will collect data from 768 patient visits pre-intervention and 1536 patient visits during the intervention. Intervention patients will be randomly assigned to the intervention or care as usual. 