The STOPP (Screening Tool of Older People's potentially inappropriate Prescriptions) criteria are a previously clinically validated set of suggested medications to avoid in patients aged 65+ with certain characteristics (e.g. benzodiazepines should be avoided in those with a fall history). These have previously been translated into point of care reminders that can be used with the OSCAR Electronic Medical Record (EMR) so that physicians are notified of potentially inappropriate prescriptions when a patient's chart is opened. This two phase explanatory study will examine if those STOPP based point of care prescribing alerts as presented to physicians in the OSCAR EMR can change potentially inappropriate prescribing patterns in primary care physicians.