Very thoughtful gift for a doctor or dentist is a Saint Damian bracelet.
Saint Cosmas and Damian were twin brothers who were early Christian martyrs. As physicians, they practiced the science of medicine in the seaport of Aegeae. They are the patron saint of pharmacists.
Their feast day is September 26th. They are the patron saint of doctors, surgeons, dentists, pharmacists, veterinarians, orphans, the protectors of children, and against the plague.