As I am considering taking part in this program, I have to wonder about how it works in a group. Does AC keep track of the MU core parameters for each provider, and allow each provider to attest independently? Or will it tally all the results for everyone using my chart system. I have a doctor working with me who has just successfully made the transition to an EMR, and I doubt he will want to to do the additional hassle, especially since he is part time only. If he does not participate, will it bring down my score? Help appreciated.