In a commercial environment “being human-centered” is a philosophy, a belief that focusing on humans when defining and delivering products will be valuable to the organization.
“Design” is also a philosophy, a set of method stances for solving wicked problems such as those posed when we want to make it possible for humans to change with the help of a product.
My view is that in the product definition work the role of product designer contains the roles of ethnographic researcher, concept developer, interaction specialist, information architect and possibly art director. The latter three roles are also done by the product designer during delivery.
Being a human-centered product designer thereby means that I choose to include humans in the design-adhering methods that I use to understand desires, create solution concepts, and ensure usability.