1- doctors are certified people that practice medicine, they are the ones that diagnose the patient by using their expertise to treat you 2-nurse tend to care for the patients, administrate the medicine and check vitals to report to the doctor 3- technicians tend to assist with the diagnoses test, like testing the blood and tissue samples. They usually work either for the hospital or the physicians 4-radiologist are doctors that specialize in diagnosing either the disease or injury by using medical images (x-ray) 5-pulmonologist tend to mostly just specialize in the reality system (lungs, etc.)
