Dr. Pei-Ying Pai was a researcher in the Mayo Clinic in Minnesota. Dr. Pei-Ying Pai has been serving in China Medical University Hospital since 1989 and was the director of the division of cardiology and the director of the division of general internal medicine. In addition to rich experience, Dr. Pei-Ying Pai is kind and patient, and treat patients as family. Dr. Pei-Ying Pai specializes not only in the diagnoses and treatments of hypertension, heart failure and coronary artery disease (CAD), but also the implementation of heart ultrasound. He has completed more than 10,000 cases of ultrasound examination in recent years.