Perform complex medical laboratory tests for diagnosis, treatment, and prevention of disease. They train or supervise staff.

Diagnose and treat visual system disorders such as binocular vision and eye movement impairments.

Diagnose, treat, and help prevent diseases using a system of practice that is based on the natural healing capacity of individuals. They use physiological, psychological or mechanical methods. They also use natural medicines, prescription or legend drugs, foods, herbs, or other natural remedies.

Provide treatment of symptoms and disorders using needles and small electrical currents. They provide massage treatment. They also provide preventive treatments.

Assess and treat persons with hearing and related disorders. They fit hearing aids and provide auditory training. They perform research related to hearing problems.

Diagnose and treat severe, episodic, or chronic illness, independently or as part of a healthcare team. They focus on health promotion and disease prevention. They order, perform, or interpret diagnostic tests such as lab work and x rays. They prescribe medication and must be registered nurses who have specialized graduate education.

Diagnose and coordinate all aspects of the birthing process, either independently or as part of a healthcare team. They provide well woman gynecological care. They must have specialized, graduate nursing education.

Administer anesthesia, monitor patient's vital signs, and oversee patient recovery from anesthesia. They assist anesthesiologists, surgeons, other physicians, or dentists. They must be registered nurses who have specialized graduate education.

Plan, direct, or coordinate the daily patient care activities in a clinical practice. They ensure adherence to established clinical policies, protocols, regulations, and standards.

Provide advanced nursing care for patients in critical or coronary care units.