Advantages: several locations, several physicians ...
Advantages: several locations, several physicians who can represent each other and who are all nice and competent (which complement each other very well, so you can do various examinations there), contact the doctor by phone (callback) or by email possible
Disadvantages: by phone bad to reach (but by email), you have a certain responsible doctor, but if he is not there, then you may, for example, during pregnancy dates with all other doctors in the practice gets), long wait on an appointment (also as a patient)