1. Trends in care by nonphysician clinicians in the United States;Druss;N Engl J Med,2003
2. Sharing the mantle of primary female care: physicians, nurse practitioners, and physician assistants;Coulter;J Am Med Womens Assoc,2000
3. The CMS Internet Manual. 100–02 (Medicare Benefit Policy Manual), Chapter 15, Sections 60.1–60.3, addresses billing for non-physician providers. Available at: http://www.cms.hhs.gov/manuals/Downloads/bp102c15.pdf. Accessed September 4, 2006.
4. Available at: http://www.cms.hhs.gov/MLNMattersArticles/downloads/SE0441.pdf. Accessed September 4, 2006.
5. Available at: http://www.cms.hhs.gov/transmittals/downlads/R1776B3.pdf. Accessed September 4, 2006.