A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).
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Specialties & Research
Dr. William O'Brien, MD is board certified in Family Medicine.
Education & Awards
Dr. O'Brien graduated from University of Minnesota, Twin Cities, Minneapolis. He has 1 awards.
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- Additional Information
- Dr. William John O'Brien MD is a male Family Practitioner, has 37 years of experience and practices in Family Medicine.
- Where does Dr. William J. O'Brien practice?
- Dr. William O'Brien has 1 office location.
Dr. William O'Brien practices Family Medicine near Fountain Hills, AZ.
See Fountain Hills Family Physicians.