Dr. David James Mast, MD

Dr. David Mast is an internal medicine physician who earned his medical degree from the University of Minnesota Medical School. He completed his residency training at Hennepin County Medical Center, building a strong foundation in comprehensive adult healthcare. With over four decades of medical practice, Dr. Mast brings extensive experience to patient care. He is fluent in English.

Dr. Mast practices at multiple locations throughout Duluth, Minnesota, and maintains affiliations with Aspirus Saint Lukes Hospital, Essentia Health Saint Marys Medical Center, and Essentia Health Duluth. His clinical expertise includes treating mood disorders and depression, with particular experience caring for children and teenagers facing these challenges. He incorporates physical therapy approaches into patient treatment plans, including strength training and manual therapy techniques. Patients consistently rate Dr. Mast highly for his care, giving him an average rating of 5.0.