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).
Learn more about Dr. David O'Brien:
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Specialties & Research
Dr. David O'Brien, MD is board certified in Anatomic Pathology & Clinical Pathology.
Education & Awards
Dr. O'Brien graduated from Indiana University , Indianapolis.
Dr. O'Brien has 3 hospital affiliations:
- Holland Hospital
- St Joseph Medical Ctr
- Va Medical Center
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- Additional Information
- Dr. David Michael O'Brien MD is a male Pathologist, has 43 years of experience and practices in Anatomic Pathology & Clinical Pathology.
- Where does Dr. David M. O'Brien practice?
- Dr. David O'Brien has 2 office locations.
Dr. David O'Brien practices Anatomic Pathology & Clinical Pathology near Columbus, IN.
Additional practice locations include: Brainerd, MN.
See Columbus Pathologists.