Treat internal disorders, such as hypertension, heart disease, diabetes, and problems of the lung, brain, kidney, and gastrointestinal tract.

Analyze records, reports, test results, or examination information to diagnose medical condition of patient.

Prescribe or administer medication, therapy, and other specialized medical care to treat or prevent illness, disease, or injury.

Provide and manage long-term, comprehensive medical care, including diagnosis and nonsurgical treatment of diseases, for adult patients in an office or hospital.

Manage and treat common health problems, such as infections, influenza and pneumonia, as well as serious, chronic, and complex illnesses, in adolescents, adults, and the elderly.

Monitor patients' conditions and progress and reevaluate treatments as necessary.

Collect, record, and maintain patient information, such as medical history, reports, and examination results.

Make diagnoses when different illnesses occur together or in situations where the diagnosis may be obscure.

Explain procedures and discuss test results or prescribed treatments with patients.

Advise patients and community members concerning diet, activity, hygiene, and disease prevention.

Refer patient to medical specialist or other practitioner when necessary.

Direct and coordinate activities of nurses, medical officers, assistants, specialists, therapists, and other medical staff. Provide consulting services to other doctors caring for patients with special or difficult problems.

Operate on patients to remove, repair, or improve functioning of diseased or injured body parts and systems.

Plan, implement, or administer health programs in hospitals, businesses, or communities for prevention and treatment of injuries or illnesses.