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  • Dr. William O'Brien, MD is a family physician in Fountain Hills, Arizona. He is currently licensed to practice medicine in Arizona and Minnesota.

Education & Training

  • University of Minnesota/North Memorial Hospital
    University of Minnesota/North Memorial HospitalResidency, Family Medicine, 1975 - 1977
  • University of Minnesota/University of Minnesota Medical Center
    University of Minnesota/University of Minnesota Medical CenterInternship, Family Medicine, 1974 - 1975
  • University of Minnesota Medical School
    University of Minnesota Medical SchoolClass of 1974

Certifications & Licensure

  • AZ State Medical License
    AZ State Medical License 1987 - 2025
  • MN State Medical License
    MN State Medical License 1975 - 2014