* University of Minnesota Medical School
* Mayo Clinic Alix School of Medicine
* Creighton University School of Medicine (has a campus in Omaha, Nebraska, but also has a large presence and program in Minnesota)
* Osteopathic Medical School (This is technically the University of North Dakota School of Medicine & Health Sciences with a campus in Bismarck and Grand Forks but has a significant presence in Minnesota via its clinical training programs.) It's often included in discussions of Minnesota medical schools due to this.
While some might debate the inclusion of the last two based on their primary location, they all have significant ties and programs within Minnesota, thus making four a reasonable answer depending on the level of detail required.