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Richard A. A. Day, MD

Gender Male
Facilities Bitterroot Health - Daly Hospital, Main Campus - Hamilton
Undergraduate Denison University, Granville, OH
OH Bachelor of Science in Biology, Minor Chemistry
Medical School University of Michigan Medical School, Ann Arbor, MI
Neurosurgery Clerkship University of Colorado, Denver, CO
Neurology Clerkship The National Hospital, Queen Square, London, UK
Stereotactic Neurosurgery University of Utah, Salt Lake City, UT
General Surgery Residency Dartmouth - Hitchcock Medical Center, Hanover, NH
Neurosurgery Residency University of Utah Medical Center, Salt Lake City, UT

Montana Medical Association: 1996
American Medical Association: 2000
American Association of Neurological Surgeons: 1997
AANC/CNS Section of Pediatric Neurosurgeons: 1996

Board certification
  • Advanced Cardiac Life Support
  • Advanced Trauma Life Support
  • National Medical Boards: Parts I and II
  • American Board of Neurological Surgery
  • American Board of Pediatric Neurosurgery


Dr. Day has been practicing adult and pediatric neurosurgery since 1996 when he moved back to his hometown of Missoula after completing his extensive education and training. He attended the University of Michigan, Dartmouth Medical Center, and University of Utah Medical Center, where he completed the Neurosurgery Residency program as well as a multidisciplinary Fellowship in Intensive Care, Anesthesia, ENT, and Emergency Medicine. He also received extensive training in pediatric Neurosurgery at Primary Children's Medical Center in Salt Lake City and through his Fellowship training at Children's Hospital in St. Louis, Missouri.

Before coming to Bitterroot Health, Dr. Day had a neurosurgery practice at St. Patrick Hospital and Community Medical Center in Missoula, with additional outreach clinics in Billings, Hamilton, Helena, Ronan, and Superior. He has published several studies in medical journals, presented at medical conferences, and participated in elective clinical training around the world.