Welcome Nathan Mollberg, DO Dr. Nathan Mollberg is a thoracic surgeon joining McLaren Greater Lansing. Dr. Mollberg comes from Bronson Methodist Hospital in Kalamazoo. He received his medical degree from from Michigan State University. He did his residency in general surgery at University of Illinois at Mount Sinai Hospital, including a molecular oncology research fellowship at the University of Heidelberg in Germany. He completed his cardiothoracic surgery residency at the University of Washington in Seattle. Welcome Dr. Mollberg!