Medical Groups, Hospitals All Locations... City of Diamond BarSurrounding Areas go Results Found: 4 Button group with nested dropdown Queen of the Valley Hospital Queen of the Valley Hospital 1115 South Sunset Ave West Covina CA 91790 (626) 962-4011 Visit Website Kaiser Permanente 1336 Bridgegate Dr. Diamond Bar CA 91765 (909) 468-5300 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