Dr. O'brien graduated from the Harvard Medical School in 1982. He works in New York, NY and specializes in Cardiovascular Disease. Dr. O'brien is affiliated with Lenox Hill Hospital and NYU Langone Medical Center.
Dr. O'Brien graduated from the Temple University School of Medicine in 1985. He works in Winston-Salem, NC and 1 other location and specializes in Internal Medicine. Dr. O'Brien is affiliated with Wake Forest Baptist Medical Center.