next i'm delighted to bring out stephanie tilenius. stephanie never backed away from a challenge, particularly if it involves destructing old ways of building business, whether building google wallet, shopping express or founding planet rx. she has brought her special touch to helping people manage health conditions with an app that connects people with health coaches. it is my distinct pleasure to welcome stephanie tilenius. to guide the conversation today, we turn to scott hensley. host at npr. scott was the founding editor of the "wall street journal" health blog and headed over to npr in 2009 to become host of shots, online channel for health news from npr scientist desk. a warm welcome to scott hensley. take it away, scott. the stage is yours. >> i appreciate it. i want to start with you. amazon accomplishments are amazing. it was simpler for them to define the customer. how do you think about the customer in health care when there are many people involved, many people paying and many people getting paid for any given service or pr