Medical assistants perform administrative and clinical tasks to keep the offices of physicians, podiatrists, chiropractors, and other health practitioners running smoothly. The duties of medical assistants vary from office to office, depending on the location and size of the practice and the practitioner's specialty. In small practices, medical assistants usually do many different kinds of tasks, handling both administrative and clinical duties and reporting directly to an office manager, physician, or other health practitioner. Those in large practices tend to specialize in a particular area, under the supervision of department administrators. Medical assistants should not be confused with physician assistants, who examine, diagnose, and treat patients under the direct supervision of a physician (www.bls.gov). Some medical assistants may help doctors examine and treat patients. They may check the height, weight, temperature, and blood pressure of each patient. Assistants write down patients' medical histories and run simple laboratory tests. Sometimes they answer patients' questions about medicines and treatment at home. Assistants may also give injections, apply bandages, and take X-rays. Many assistants take electrocardiograms, which measure the electrical impulses of the heart. Medical assistants are sometimes in charge of buying and maintaining medical equipment and furniture for the doctor's office. They may also act as office managers. They plan the doctor's schedule, greet patients, file records and correspondence, and type letters and bills. Assistants keep medical records up to date and handle tax and insurance forms. At the doctor's request they arrange for laboratory tests or for a patient's admission to the hospital. In a large group practice or in a hospital clinic, the duties of the medical assistant may be divided among several