Linden Capital Partners has completed its acquisition of Aspirion from Aquiline Capital Partners, according to a news release.

Aspirion, based in Columbus, Ga., is a full-service revenue cycle management company. Founded in 2006, the company specializes in motor vehicle accident, third-party liability, workers’ compensation, Veterans Administration, out-of-state Medicaid, and Medicaid eligibility and enrollment claims.

Linden, based in Chicago, is a private equity firm focused exclusively on the healthcare industry. Founded in 2004, the firm pursues acquisition opportunities across the healthcare industry, including services, products and distribution companies, and prefers to make more substantial investments from a dollars perspective.

Aquiline is a is a private investment firm with its U.S. operations based out of New York. Its private equity team targets investments in several industries. Investments typically falling in the range of $20 million to $200 million, either funded all at once or over time.

Terms of the acquisition were not disclosed.

Varsity Healthcare Partners (VHP) has joined the Aspirion ownership group as a minority shareholder. VHP, with offices in Los Angeles and Stamford, Conn., is a lower middle market private equity firm focused on healthcare services. Founded in 2014, VHP aims to commit equity investments ranging from $20 million to $60 million.