Medical Groups, Hospitals All Locations... City of Diamond BarSurrounding Areas go Results Found: 3 Button group with nested dropdown 51-99 Employees Kaiser Permanente 25825 Vermont Ave. Harbor City CA 90710 (424) 267-7421 Visit Website Providence St. Joseph Health 26-50 Employees Providence St. Joseph Health 955 W Imperial Hwy Ste 210 Brea CA 92821-3812 (714) 681-0207 CareMore Medical Group CareMore Medical Group 3180 Colima Rd. Suite A Hacienda Heights CA 91745 (626) 978-0547