One local, terrific piano teacher is Dick Cady. Lives on upper Genessee Hill near 54th and Charlestown. Here’s a link, although it’s about where he teaches ion Bellevue. I’m pretty sure he teaches locally, too.
http://www.robertsmusicinstitute.com/Bio.aspx?uid=665
As a double duty kind of thing, his wife, Susan Willanger-Cady, is one of the most, if not THE most, foremost piano tuners in Seattle.