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. Christopher O'Brien, MD is board certified in Internal Medicine and Pulmonary Disease.
He has special expertise in 2 Areas, including Asthma and Chronic Obstructive Pulmonary Disease COPD.
More Specialties & Research
Education & Awards
Dr. O'Brien graduated from University of Connecticut , Farmington.More Education & Awards
Dr. O'Brien has 4 hospital affiliations:
- Pennsylvania Hospital University PA Health System
- Hospital of the University of PA
Accepted Insurance Plans
Dr. O'Brien accepts these health insurances in at least one office:
- Great-West Healthcare - 2 plans
- Oxford Health Plans - 2 plans
- Humana - 2 plans
- Independence Blue Cross - 2 plans
- Unicare - 2 plans
- Cigna - 2 plans
More Accepted Insurance
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- Additional Information
- Where does Dr. Christopher D. O'Brien practice?
Dr. Christopher O'Brien practices Internal Medicine, Pulmonary Disease, Critical Care Medicine, and Critical Care Medicine near Philadelphia, PA.
See Philadelphia Internists, Philadelphia Pulmonologists, and Philadelphia Urgent Care Centers.