One GBP per practicing location, attending physician as designated owner.
Google Business Profile guidelines require a separate profile per practicing location. The designated owner of each location's GBP needs to be a physician practicing at that location, not a brand-level administrator. Multi-location practices that consolidate to a single brand-level GBP forfeit local-pack visibility at every secondary location. The same-address GBP filter compounds the problem when multiple physicians share an office. The architecture has to acknowledge how Google enforces uniqueness at the address-plus-category level.