Dr. Mark Keegan, MD

Dr. Mark Keegan is a neurologist who specializes in autoimmune conditions affecting the brain and nervous system. He earned his medical degree from the University of Saskatchewan Medical School and completed his residency training at both the University of Saskatchewan and Mayo Clinic College of Medicine. Dr. Keegan further advanced his expertise through a fellowship at Mayo Clinic in Rochester, building on more than three decades of medical practice. He provides care in English for his patients.

Dr. Keegan practices at Mayo Clinic Hospital Methodist Campus in Rochester, Minnesota. His clinical focus centers on autoimmune neurological disorders, including conditions where the immune system mistakenly attacks brain tissue. He has particular expertise in treating autoimmune encephalopathy, a condition that causes brain inflammation, and dementia related to autoimmune processes. These complex conditions require specialized knowledge to diagnose and manage effectively.