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 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 active 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 Find a doctor 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 Patrick W. O'Leary, M.D. Rochester, MN Area of Focus: Echocardiogram, Hypoplastic left heart syndrome, Congenital heart disease, Heart disease, Congenital heart defects in children Jae K. Oh, M.D. Rochester, MN Area of Focus: Echocardiogram, Coronary artery disease, Heart valve disease, Pericarditis, Shortness of breath, Cardiomyopathy Keith R. Oken, M.D. Jacksonville, FL Area of Focus: Cardiovascular disease prevention, Transesophageal echocardiogram, Stress echocardiogram, Echocardiogram, Transthoracic echocardiogram, Marfan syndrome, Acute coronary syndrome, Pericardial disease, Heart valve disease, Congestive heart failure, Coronary artery disease, Cardiomyopathy Lyle J. Olson, M.D. Rochester, MN Area of Focus: Echocardiogram, Myocarditis, Cardiomyopathy, Heart failure, Congestive heart failure Thomas P. Olson, Ph.D., M.S. Rochester, MN Area of Focus: Cardiac rehabilitation, Cardiovascular disease prevention, Heart failure Timothy M. Olson, M.D. Rochester, MN Area of Focus: Hypoplastic left heart syndrome, Spontaneous coronary artery dissection, Dilated cardiomyopathy Steve R. Ommen, M.D. Rochester, MN Area of Focus: Echocardiogram, Heart valve disease, Hypertrophic cardiomyopathy Michael (Michael J.) J. Osborn, M.D. Rochester, MN Area of Focus: Endovenous thermal ablation, Implantable cardioverter-defibrillator (ICD) insertion, Pacemaker insertion, Heart arrhythmias Medical Professionals Cardiovascular Diseases Physicians