Perform a new searchEdit search filters close Narrow your search By conditions treated/procedures performed No results found By location Rochester, MN Phoenix/Scottsdale, AZ By last name 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 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 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 Reset all filters Search Tips Use quotes for phrases. Even if there are no auto-suggestions within the search field, hit "Search" anyway, as you may still get results. "cardiology": Displaying 1-5 out of 5 doctors available Last Name Initial: O Connor Q. O'Hare, M.D. Emergency Medicine Physician Phoenix, AZ Patrick W. O'Leary, M.D. Pediatric Cardiologist Rochester, MN Areas of focus: Echocardiogram, Congenital heart defects in children, Heart disease, Hypoplastic left heart syndrome, Congenital heart ...disease Show more areas of focus for Patrick W. O'Leary, M.D. Lyle J. Olson, M.D. Cardiologist Internist Rochester, MN Areas of focus: Echocardiogram, Heart failure, Myocarditis, Cardiomyopathy Thomas P. Olson, Ph.D., M.S. Rochester, MN Areas of focus: Cardiac rehabilitation, Cardiovascular disease prevention, Heart failure Steve R. Ommen, M.D. Cardiologist Rochester, MN Areas of focus: Echocardiogram, Heart valve disease, Hypertrophic cardiomyopathy 5X Challenge is here! 5X My Gift!Your gift today can have 5X the impact on AI research and technology. But hurry — the match challenge ends 9/19. 5X My Gift!