RN, Registered Nurse, RN ER, RN ER Per Diem, RN ER California, RN CA, RN Jobs in California, RN Per Diem Job, RN Per Diem, Registered Nurse Job, RN Job Opening, RN CA Per Diem Job, RN ER Los Angeles, CA Job, RN Emergency Room Job. Arise CareStaff is hiring an Emergency Room (ER) Registered Nurses (RN) to work for our client healthcare facility in Los Angeles, CA.