HealthCareAtlasUSA

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Doctors / NY

MARY E O'BRIEN, MD

INTERNAL MEDICINE

Medical school: HARVARD MEDICAL SCHOOL

Graduated: 1977

NPI: 1114079118

Practice Locations (1)

NEW YORK CITY HEALTH AND HOSPITALS CORPORATION

264 W 118TH ST

NEW YORK, NY 100261620

2129326500

Source: CMS National Downloadable File, September 2026.

MARY O'BRIEN, MD | HealthCareAtlasUSA