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).
Our records indicate this doctor is retired.
Learn more about Dr. Arthur O'Brien:
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Specialties & Research
- He has special expertise in 1 area:
- Flu (Human Influenza)
Education & Awards
Dr. O'Brien graduated from Boston University .
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- Additional Information
- Dr. Arthur Clarence O'Brien MD is a male Family Practitioner and practices in Family Medicine.
- Where does Dr. Arthur C. O'Brien practice?
- Dr. Arthur O'Brien has 1 office location.
Dr. Arthur O'Brien practices Family Medicine near Castro Valley, CA.
See Castro Valley Family Physicians.