Tagging doctor's offices, keeping individual data

In France, it is common to have small doctor offices consisting of 2-10 doctors, each with their own name and speciality, but without a brand or somehow identifiable common name (other than generic "Medical group" names or so). Therefore, doctors are identified by their names only, typically with smal plaques at the entrance of the building stating each doctor's name and speciality.

The amenity=doctors tag seems the right one for this kind of place, however I wonder how should the names be filled in, ideally so that people searching for that doctor's name will be able to find his/her office (similarly to what one can do in Google Maps).

Should I put all doctor's names separated by semicolons, instead of "Medical group"? Also, how could one map each doctor to its speciality, if all specialities are grouped in the healthcare:speciality tag?

I though of the other possibility of doing it, that is, creating a different node for each doctor, but this is less than ideal:

• It pollutes the visual (so many names, so close to each other, inevitably lead to some names not being readable in most renderers);
• Ideally, one should know exactly where each office is, but short of visiting them individually and knowing where in the building each doctor is, I'd have to just clump them together somehow near the building entrance;
• In some cases, they have a secretary and a common phone number, but in other cases each has their own phone number, so once again, clumping them together would lose information.

In the end, I think that adding a node for the medical group itself, with all specialities, plus a separate node for each doctor, with their specific name, speciality and phone number, would be the only way to preserve all data, but this would require "inventing" their exact locations, plus would be a bit of an overkill.

Is there a good example of how to do it in practice?