In April, the two-year-old RHIO began offering a clinical decision-support service through ActiveHealth Management, a New York-based company. ActiveHealth's CareEngine technology compares patients' medical, pharmacy and laboratory claims against established standards of care. It then notifies a physician if it finds an opportunity to improve a patient's treatment.

For example, CareEngine can alert physicians to potential adverse drug interactions, overlooked lab tests or the availability of beneficial drugs, according to ActiveHealth.