Prior to joining HealthPartners, Tretheway practiced law at Gray, Plant, Mooty, Mooty and Bennett, P.A. in Minneapolis. She is a member of the American Bar Association, Minnesota State Bar Association, Wisconsin State Bar Association, and the American Health Lawyers Association. She is a member of the board of directors of Martins Point Health Care in Portland, Maine and the Overseas Cooperative Development Council in Washington, D.C.

Doctor of Law, University of Wisconsin Law School

Raised in Madison, Wisconsin. Her interests include travel, cooking and movies.