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 Find a doctor 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 Find a doctor whose last name begins with the letter Z Z View All By Location: View All Rochester, MN Phoenix/Scottsdale, AZ Allan S. Jaffe, M.D. Rochester, MN Area of Focus: Troponin test, Fibrinogen test, Brain natriuretic peptide test, Heart attack, Heart disease, Atrial fibrillation, Depression, Acute coronary syndrome, Unstable arrhythmia Dawn E. Jaroszewski, M.D. Phoenix, AZ Area of Focus: Minimally invasive surgery, Thoracoscopy, Pectus excavatum surgery, Chest surgery, Thoracotomy, Pectus correction surgery, Lung cancer, Pectus excavatum, Chest wall tumor, Thymic tumor, Pectus carinatum, Mediastinal tumor Jacob C. Jentzer, M.D. Rochester, MN Area of Focus: Central venous catheterization, Intensive care, Thoracentesis, Endotracheal intubation, Pulmonary vein angioplasty, Heart attack, Sudden cardiac arrest, Sepsis, Cardiogenic shock, Shock, Ventricular arrhythmia, Respiratory failure, Cardiorenal syndrome, Kidney failure, Decompensated heart failure 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: Heart transplant, Transesophageal echocardiogram, Fetal echocardiogram, Heart failure, Congenital heart defects in children, Cardiomyopathy, Congenital heart disease Maan Jokhadar, M.D. Rochester, MN Area of Focus: Heart failure, Congenital heart defects in adults Hayan Jouni, M.D. Rochester, MN Medical Professionals Cardiovascular Diseases & Cardiac Surgery Physicians