The Seventh Circuit held that a health insurer that makes benefits determinations and pays benefit claims, rather than the health plan itself, is a proper defendant in an action for benefits under ERISA Section 502(a)(1)(B).  In Larson v. United Healthcare Ins. Co., No. 12-1256, 2013 WL 3836236 (7th Cir. July 26, 2013) (unpublished), plan…