What would you think about paying 15% more for supplies than your peers for the exact same items?  Or what about adding staff (and therefore administrative expenses) to negotiate contracts on your behalf, only to find out that your colleagues have someone negotiating for them – and doing it for free.  Well, if you have failed to explore the benefits of group purchasing organizations (or GPOs) for your practice or stand-alone surgical center, it’s time to listen up. In a word, it’s all about leverage. Group purchasing organizations aggregate purchasing volume and negotiate contracts on behalf of members, thereby lending…