January 14, 2026

Constantine Cannon represented a whistleblower alleging several affiliates of Oakland-based Kaiser Permanente violated the False Claims Act by submitting invalid diagnosis codes for their Medicare Advantage patients to secure inflated payments from the Government.  In January 2026, Kaiser agreed to pay $556 million to settle the matter.  It is the largest False Claims Act settlement to date involving alleged fraud on the Medicare Advantage program (also known as risk adjustment fraud).  It is also the fourth major Medicare Advantage fraud settlement in which Constantine Cannon represented one of the originating whistleblowers.  Read more: CC; DOJ; NYT; WSJ; Reuters.