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License & Identifications

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. Sean O'Mahony:

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Specialties & Research

Dr. Sean O'Mahony, MD is board certified in Internal Medicine.

Education & Awards

Dr. O'Mahony graduated from University College Dublin.


Dr. O'Mahony has 5 hospital affiliations:

  • Montefiore Medical Center 
  • Beth Israel Medical Center 

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Additional Information
Dr. Sean O'Mahony MD is a male Internist, has 21 years of experience and practices in Internal Medicine.
Where does Dr. Sean O'Mahony practice?
Dr. Sean O'Mahony has 3 office locations.
Dr. Sean O'Mahony practices Internal Medicine near Bronx, NY.
Additional practice locations include: Chicago, IL.
See Bronx Internists.