You're a terrible negotiator. Remember, hospital admins, learn how to bargain with doctors the same way doctors learn to calculate an ion gap. If you commit to the MGMA as the Torah for how to get paid you've already made a HUGE concession from the get-go.
Any doctor's BATNA is to just walk away. Instead, "expand the conversation" about how you will get paid by realizing that they can literally pay you anything they want...You do that by talking about PEV and never stop talking about it. Watch how the mood in the room changes when you start talking about PEV, ancillary revenues, downstream multiplier effects, etc.