Yes. Chefs also do shopping, menu planning, prep, hiring, firing, marketing, and schmoozing with patrons. Source: I know a chef.
You have to ask whether you're talking about a senior executive ("Chef de Cuisine", "Head Chef", "Executive Chef"), a subject matter expert or mid-level professional ("Saucier", "Pastry Chef", "Line Cook"), a junior person ("Prep Chef"), or a low man on the totem pole ("Busboy", "Dishwasher").
"Chef" is a very vague term when applied to large restaurants. Obviously, in a little family owned place, a lot of these roles would collapse.