Avista Capital-backed National Spine and Pain Centers, a network of interventional pain practices, completed the merger with Prospira PainCare, a company providing invasive procedures and leading-edge clinical research. Financial terms were not disclosed. "With this union, we are doubling down on our commitment to our mission to end needless human pain and suffering by facilitating world-class care. Our combined platform is not only better poised to help more people needlessly suffering from pain, but is also even better positioned to fulfill our societal goal of lowering the total cost of care through minimally invasive treatment options in readily accessible community settings, whenever clinically appropriate," Douglas Wisor, NSPC CEO.