Athenahealth is buying the enterprise EHR system developed by Beth Israel Deaconess Medical Center, Boston.

The Harvard teaching hospital’s inpatient EHR, called webOMR, is web-based and is currently used in Beth Israel Deaconess’ 649-bed flagship hospital as well as in more than 30 outpatient sites.

Athena plans to integrate its own ambulatory-care EHR with another it bought this year and with the far more feature-rich webOMR, and create the “behemoth solution” called athenaClinicals Enterprise.

Athena plans to integrate its own ambulatory-care EHR with another it bought this year and with the far more feature-rich webOMR.The Beth Israel Deaconess EHR “brings us deep patient safety and clinical function technology,” according to the CEO Jonathan Bush.

Under terms of the agreement, Beth Israel Deaconess will retain a license to use the software for 20 years. Additionally, five of the hospital’s staff developers will work for Athena one day a week for two years. Financial terms of the deal were not revealed, though.

Until last month, Athenahealth was known primarily for developing practice-management and EHR systems for office-based physicians, and for the popular mobile healthcare app Epocrates, which it acquired in 2013.

The company is not taking aim at inpatient EHR market leaders like Epic or Cerner, “at least not yet,” Bush said.

In mid-January, Athena bought RazorInsights, a developer of web-based, inpatient EHRs marketed to small and critical-access hospitals.