I have tuned for everything from the highest professional musician to the beginning student with no complaints. I have a 5 star rating on Thumbtack and I'm A+ rated at the Better Business Bureau.
Recently Jon tuned my two pianos. After the wonderful job he performed on these I also had him do extensive repair and reconditioning on the baby grand to the point where it is far more playable and most importantly, enjoyable to use. In addition to a friendly personality Jon communicated with me honestly about expectations and results. Not only was having Jon in my home a pleasure when a small issue arose with one of the repairs he came back right away to fix it. Want someone honest, that does a good job and stands by their work? Then Jon is who you are looking for.
It's best to call me at (650) 759-1369 to check pitch.
50+ years in the business. I attend yearly Piano Technician's Guild conventions, when possible, to keep up on new trends.