Dr. Nieman is a physician, life coach, marathon runner and the author of Moving Forward and 101 Finish Lines. He has completed 114 marathons and continues the habit of running daily since December ...ver maisDr. Nieman is a physician, life coach, marathon runner and the author of Moving Forward and 101 Finish Lines. He has completed 114 marathons and continues the habit of running daily since December 2009. He sees patients in his Centre 70 Pediatric Clinic. Peter and his wife live in Calgary Canada. They have four children and one grandchild.ver menos