This is the 5736th most frequent French word.
chez
"Chez" means "at the home/place of" or "at" when referring to someone's residence or establishment.
In this sentence, 'chez' indicates a location associated with a person or profession, specifically the doctor's office.
Je vais chez le médecin.
I am going to the doctor's office.
Here, 'chez' is used to refer to the residence of someone, in this case, Marie's home.
Nous avons passé la soirée chez Marie.
We spent the evening at Marie's place.
In this example, 'chez' refers to within the context or domain of a group or concept, such as philosophers.