 Amazon continued to occupy their floors during rehabilitation of the structure . In 2003 , the clinical group practice of the PHPDA officially split off to form a 501 ( c ) 3 health care organization , <unk> Clinics ( doing business as Pacific Medical Centers or PMC ) . The Pacific Medical Center Clinic continues to operate in the first two floors of the building . In 2010 , Amazon.com ended its sub @-@ lease with <unk> Tower LLC and began the move of its headquarters to a new campus in the city 's South Lake Union neighborhood . Much of the building was left vacant without new tenants moving into the space . The location outside of downtown Seattle was a constraint for businesses . 
