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. Katherine O'Brien:
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Specialties & Research
Dr. Katherine O'Brien, MD is board certified in Obstetrics & Gynecology.
More Specialties & Research
Education & Awards
Dr. O'Brien graduated from State University of New York Downstate, Brooklyn.More Education & Awards
Dr. O'Brien has 3 hospital affiliations:
- Valley Hospital
- Nyack Hospital
- Long Island Jewish Medical Center
Accepted Insurance Plans
Dr. O'Brien accepts these health insurances in at least one office:
- United Healthcare - 20 plans
- Great-West Healthcare - 2 plans
- Fidelis Care - 3 plans
- Humana - 2 plans
- Cigna - 6 plans
- The Empire Plan (UHC) - 1 plan
More Accepted Insurance
Similar doctors nearby
- Additional Information
- Where does Dr. Katherine E. O'Brien practice?
Dr. Katherine O'Brien practices Obstetrics & Gynecology near Pomona, NY.
Additional practice locations include: Paramus, NJ.
See Pomona Obstetricians & Gynecologists.