Alexander C. Perino MD is a cardiac electrophysiologist, clinical informaticist, and cardiovascular researcher. In his clinical role, Dr. Perino treats patients with heart rhythm disorders at Stanford Health Care, performing catheter ablations and cardiac device implantations. In addition to complex ablation (e.g., atrial fibrillation and ventricular tachycardia ablation), Dr. Perino has expertise implanting leadless pacemakers, subcutaneous ICDs, and conduction system pacing leads (i.e., His bundle and left bundle branch area pacing leads). Dr. Perino is the medical informatics director for the Division of Cardiovascular Medicine at Stanford Health Care, providing informatics direction to improve 1) the quality and safety of cardiovascular care delivery and 2) patient and clinician experience derived from the electronic health record and related information and communication technologies. As a cardiovascular researcher, Dr. Perino uses large datasets to examine quality of care, outcomes, and risk prediction for heart rhythm disorders and cardiovascular disease.