Doctors Find a doctor whose last name begins with the letter A A Find a doctor whose last name begins with the letter B B Find a doctor whose last name begins with the letter C C Find a doctor whose last name begins with the letter D D Find a doctor whose last name begins with the letter E E Find a doctor whose last name begins with the letter F F Find a doctor whose last name begins with the letter G G Find a doctor whose last name begins with the letter H H There are no doctors whose last name begins with the letter I I active Find a doctor whose last name begins with the letter J J Find a doctor whose last name begins with the letter K K Find a doctor whose last name begins with the letter L L Find a doctor whose last name begins with the letter M M Find a doctor whose last name begins with the letter N N Find a doctor whose last name begins with the letter O O Find a doctor whose last name begins with the letter P P Find a doctor whose last name begins with the letter Q Q Find a doctor whose last name begins with the letter R R Find a doctor whose last name begins with the letter S S Find a doctor whose last name begins with the letter T T There are no doctors whose last name begins with the letter U U Find a doctor whose last name begins with the letter V V Find a doctor whose last name begins with the letter W W There are no doctors whose last name begins with the letter X X Find a doctor whose last name begins with the letter Y Y There are no doctors whose last name begins with the letter Z Z View All By Location: View All Rochester, MN Jacksonville, FL Phoenix/Scottsdale, AZ Samuel Jacob, M.D. Jacksonville, FL Area of Focus: Organ recovery surgery, Mechanical circulatory support device implantation, Heart transplant, Lung transplant, Respiratory failure, Heart failure Allan S. Jaffe, M.D. Rochester, MN Jacksonville, FL Area of Focus: Brain natriuretic peptide test, Troponin test, Fibrinogen test, Atrial fibrillation, Heart disease, Unstable arrhythmia, Acute coronary syndrome, Depression, Heart attack Dawn E. Jaroszewski, M.D. Phoenix, AZ Area of Focus: Minimally invasive surgery, Pectus excavatum surgery, Thoracotomy, Pectus correction surgery, Thoracoscopy, Chest surgery, Thymic tumor, Mediastinal tumor, Chest wall tumor, Pectus carinatum, Pectus excavatum, Lung cancer Jacob C. Jentzer, M.D. Rochester, MN Area of Focus: Intensive care, Endotracheal intubation, Pulmonary vein angioplasty, Central venous catheterization, Thoracentesis, Respiratory failure, Sudden cardiac arrest, Kidney failure, Heart attack, Shock, Ventricular arrhythmia, Sepsis, Cardiogenic shock, Decompensated heart failure, Cardiorenal syndrome Bruce D. Johnson, Ph.D. Rochester, MN Phoenix, AZ Area of Focus: Cardiovascular disease prevention, Hypoxia, Effect of high altitude Jonathan N. Johnson, M.D. Rochester, MN Area of Focus: Fetal echocardiogram, Transesophageal echocardiogram, Heart transplant, Congenital heart disease, Congenital heart defects in children, Cardiomyopathy, Heart failure Hayan Jouni, M.D. Rochester, MN Medical Professionals Cardiovascular Diseases & Cardiac Surgery Physicians