Lydie A. Lebrun, Joya Chowdhury, Alek Sripipatana, Ravi Sharma, A. Seiji Hayashi, Charles A. Daly, Naomi Tomoyasu, Suma Nair, and Quyen Ngo-Metzger are with the Bureau of Primary Health Care, Health Resources and Services Administration, US Department of Health and Human Services, Rockville, MD. Leiyu Shi and Jinsheng Zhu are with the Department of Health Policy and Management, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD.