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. Gerald O'Brien:
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- Currently 4 of 4 stars
The overall average patient rating of Dr. Gerald O'Brien is Excellent.
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Specialties & Research
Dr. Gerald O'Brien, MD is board certified in Internal Medicine, Critical Care Medicine, and Pulmonary Disease.
- He has special expertise in 5 areas:
- AIDS/HIV (Acquired Immunodeficiency Syndrome)
- Congenital Heart Defects
- Connective Tissue Diseases
- Lung Diseases
- Pulmonary Hypertension
Education & Awards
Dr. O'Brien graduated from Ponce School of Medicine .
Dr. O'Brien has 6 hospital affiliations:
- Christiana Care Health Services
- St Francis Hospital
Accepted Insurance Plans
Dr. O'Brien accepts these health insurances in at least one office:
- Independence Blue Cross - 2 plans
- Humana - 2 plans
- Cigna - 9 plans
- Unicare - 5 plans
- USA H & W Network - 1 plan
Similar doctors nearby
- Additional Information
- Where does Dr. Gerald M. O'Brien practice?
Dr. Gerald O'Brien practices Internal Medicine, Critical Care Medicine, and Pulmonary Disease near Newark, DE.
Additional practice locations include: Philadelphia, PA and Wilmington, DE.
See Newark Internists, Newark Critical Care Practitioners, and Newark Pulmonologists.