This outcome measures the Number of patients prescribed appropriate anticoagulation medication based on risk factors for stroke including congestive heart failure (C), hypertension (H), Age >74 (A2), Diabetes (D), prior stroke or transient ischemic attack (TIA) (S2), vascular disease (V), age 65-74 (A), female sex (Sc), commonly referred to as CHA2DS2-VASc stroke risk score for patients with atrial fibrillation. CHA2DS2-VASc score includes 7 indicators of stroke risk (age (<65=0, 65-74=1, 75+= 2), sex (male=0, female=1), heart failure (no=0, yes=1), hypertension (no=0, yes=1), prior stroke/TIA (no=0, yes=2), history of vascular disease (no=0, yes=1), and diabetes (no=0, yes=1). Anticoagulation is indicated for a female with a score 3 or higher and males with a score of 2 or higher. This information will be collected from electronic health records.