(April 16, 2019, 11:57 AM EDT) -- LOS ANGELES — Assignments provide a debt purchaser with standing to pursue medical providers’ underpayment claims against an insurer, but its repeated failure to adequately support the claims dooms its case, a federal judge in California held April 3 in dismissing the claims without leave to amend (Namdy Consulting Inc. v. UnitedHealthcare Insurance Co., No. 18-1283, C.D. Calif., 2019 U.S. Dist. LEXIS 57624)....