Very competant, experienced no-nonsense dentist.
Dr. Phan repaired dental work botched by other several other dentists. Dr. Phan has sound judgement and is something of a minimalist, i.e. he doesn't try to aggressively treat every minor problem that he uncovers. His skill level is very high, certainly better than the faculty members at Harvard Dental school who previously had treated me. He also tackles problems one at a time, rather than tackling everything at once. This takes more time, but results in much better outcomes.
Dr. Phan is someone you can rely on to do things right and well the first time, particularly for complex or difficult cases like mine . Technical skill and judgement is top tier. A good guy for tough cases.
If sound medical judgement and quality of workmanship is your major concern, Dr. Phan is your man.
Dr. Phan is also a nice guy.