*A note regarding geographical domains:  Many Professionals use a geographical name in their corporate or business name. Ophthalmologists generally prefer "town/state/city name + Eye" or an "Eye MD" domain. (Town/City/State + Eye Doctor, Eye Care or Eye Clinic works for all Eye docs.)

Geographical names generally cannot be trademarked.  This makes it all the more important that you secure your geographical domain now, as the Internet goes progressively more local and prospective patients invariably look for medical care in their local area.  The lesson? Get the geographical name before your competition does!  Similarly, surnames and generic words are generally not able to be trademarked.