Anna Hudson November 12, 2012David J. Mach, D.O.’05 David J. Mach, D.O.’05Mach joined Lake Region Healthcare in Fergus Falls, MN, as a psychiatrist. A member of the American Psychiatric Association, he will see patients at Lake Region’s Clinic Services and in the Bridgeway Care Unit. He completed his residency at Hennepin-Regions Psychiatry Training Program in Minneapolis. Mach and his wife have four children. Leave a Reply Cancel replyYou must be logged in to post a comment.