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About Dr. Dennis Obrien
Dr. Dennis Obrien, MD is a Doctor primarily located in Saint James, NY, with other offices in Saint James, NY and Smithtown, NY (and 1 other location). He has 37 years of experience. His specialties include Internal Medicine. Dr. Obrien is affiliated with St Catherine Of Siena Medical Center. He speaks English.
Dr. Dennis Obrien has the following 1 specialty
- Internal Medicine
An internist is a physician who focuses on the diagnosis and treatment of conditions that affect the adult population—both acute and chronic.
These doctors are often who adults see as their primary physicians because they treat a broad...
Dr. Dennis Obrien is similar to the following 3 Doctors near Saint James, NY.