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* Includes visits to a physician assistant or advance practice nurse (e.g., nurse practitioner, nurse midwife, or other advance practice nurse), with or without a physician present. Estimates are based on sampled visits to hospital outpatient departments.

The percent of hospital outpatient department visits in which a patient saw a physician assistant or advance practice nurse increased from 11% in 1999 to 17% in 2009.

Sources: Hing E, Uddin S. Physician assistant and advance practice nurse care in hospital outpatient departments. NCHS Data Brief no. 77. Hyattsville, MD: US Department of Health and Human Services, CDC, National Center for Health Statistics; 2011. Available at http://www.cdc.gov/nchs/data/databriefs/db77.htm.

National Hospital Ambulatory Medical Care Survey public use data file. Available at http://www.cdc.gov/nchs/ahcd.htm.

Alternate Text: The figure above shows the percentage of hospital outpatient department visits in which a physician assistant or advance practice nurse was seen in the United States, during 1999-2009, according to data from the National Hospital Ambulatory Medical Care Survey.