General practitioner/physician diagnoses, treats and prevents illness, disease, injury, and other physical and mental impairments in humans through application of the principles and procedures of modern medicine. He/she does not limit his/her practice to certain disease categories or methods of treatment, and may assume responsibility for the provision of continuing and comprehensive medical care to, and the maintenance of general health of, individuals, families and communities. Medical graduates undergoing housemanship are also classified here.