Steven A. Mueller, Bradley J. Brown, Mark A. Kruse, Kevin D. Miller, and Larry E. Phipps, on Behalf of Themselves and Those Like Situated v. Wellmark, Inc. D/B/A Wellmark Blue Cross and Blue Shield of Iowa, an Iowa Corporation and Wellmark Health Plan of Iowa, Inc., an Iowa Corporation

WATERMAN, Justice.

In this complex interlocutory appeal from a putative class action, we must decide whether the district court correctly granted several dispositive motions. Plaintiffs are doctors of chiropractic who allege they have been victimized by the discriminatory practices of Iowa’s largest health insurer, Wellmark, Inc. 1 The plaintiffs claim Wellmark wrongfully imposes restrictions and pays lower rates for chiropractic services than for equivalent services offered by medical doctors or osteopathic physicians. Plaintiffs allege that Wellmark not only has violated various insurance…