While Intuitive Surgical (ISRG -0.04%) has long been a Motley Fool favorite and a darling of the stock market, it has been a difficult month for the stock, coming down 5% and being targeted by short seller Citron Research. In this video, Motley Fool health care analyst David Williamson takes us through Wall Street's bullish stance on the stock, but also how Intuitive Surgical could be negatively affected by the pressure to lower health care costs.