Athena is not interested in having only a portion of your data; they want the demos, insurance information, AND the notes. Hence, they are not motivated to facilitate connection between your PM and AC. So they charge a fortune to make it happen.
For example, "Bush [Athena's CEO] says that Athena might be able to halve the amount that physicians pay to use its EHR if they participate in what is now a nascent effort at the company called ?AthenaCommunity.? Athena?s EHR customers who opt to share their patients? data with other providers would pay a discounted rate to use Athena?s health record software. Athena would be able to make money with the patient data by charging, say, a hospital a small fee to access a patient?s insurance and medical information from Athena?s network"