Blackstone Agrees to Buy Audax’s Health-Care Adviser Chartis (1)

Blackstone Inc. has agreed to buy health-care consulting firm Chartis Group from Audax Private Equity.

The buyout giant is making a majority investment through its core private equity strategy, according to a statement on Wednesday that confirmed an earlier Bloomberg News report. Financial terms weren’t disclosed.

The deal could value Chartis at about $1.4 billion, including debt, people familiar with the matter said, asking not to be identified discussing confidential information. Audax will remain invested in Chartis.

Chartis, founded in 2001, advises health-care organizations such as academic medical centers, hospitals and provider networks. Boston-based Audax, which specializes ...