Martis Capital has announced it completed the sale of Altruista Health to HealthEdge Software, a portfolio company of the Blackstone Group.

Altruista, based in Reston, Va., is a provider of care management and population health management solutions designed to support value-based and person-centered care models.

HealthEdge, based in Powell, Ohio, is the developer of HealthRules Payor, a financial, administrative and clinical platform for health insurers.

Martis Capital, with offices in San Francisco and Washington, D.C., is a private equity firm focused exclusively on the healthcare industry. Founded in 2012, the firm targets growth-oriented healthcare companies in the middle market.

The Blackstone Group, based in New York, targets investments in established and growth-oriented businesses. Founded in 1985, Blackstone’s asset management businesses has nearly $584 billion in assets under management.

Terms of the transaction were not disclosed.