RT Journal A1 Kale MS, Federman AD, Ross JS T1 VIsits for primary care services to primary care and specialty care physicians, 1999 and 2007 JF Archives of Internal Medicine JO Archives of Internal Medicine YR 2012 FD October 8 VO 172 IS 18 SP 1421 OP 1423 DO 10.1001/archinternmed.2012.3207 UL http://dx.doi.org/10.1001/archinternmed.2012.3207 AB With the US health care system rapidly undergoing organizational changes that will have an impact on the delivery of primary care, a better understanding is needed of primary care services provided by generalist and specialist physicians. For this reason, we used the National Ambulatory Medical Care Survey (NAMCS) to examine changes in the frequency with which patients visited generalists and specialists for primary care services between 1997 and 2007.