I "inherited" Frank Baron from my grandmother. He used to practice in a group clinic on First Hill, near Swedish Hospital. My grandmother was a regular patient of his, and loved his professional and personal manner. My mom - who took my grandmother to the doctor - started seeing him as well, and soon after, so did I.
Dr. Baron moved his practice to Mercer Island several years ago to reduce his commute time and see more of his family. Even with the extra drive, whenever I have a dermatology question, I always make the drive over from Seattle (it's not *that* far). I've also seen a few of his partners when he wasn't available and -- while they don't share his personal history with my family -- they've been equally skilled doctors, as well as great communicators (a big selling point for me with medical professionals).
I haven't seen Dr. Baron in a few years, but I believe he's still actively practicing. If you live in Seattle and need a dermatologist, I highly recommend you pay him a visit.