Can coronary artery disease be identified on a routine echocardiogram?

Yes. Well the visualization of the coronary artery branches is quite limited although one can not uncommonly see the origin of the left main coronary artery for instance especially when calcified. In addition, coronary artery disease can result in focal abnormalities in contraction. Primary muscle disease in general interferes with contraction all over. If the abnormality is focal it suggests cad.
It's not sensitive. It is not a great test for that unless it is a stress echo.