Dr. O' Brien Jr graduated from the University of Buffalo, SUNY School of Medicine and Biomedical Sciences in 1978. He works in Buffalo, NY and 1 other location and specializes in Internal Medicine. Dr. O' Brien Jr is affiliated with Buffalo General Medical Center.
Medical School: University of Buffalo, SUNY School of Medicine and Biomedical Sciences; Graduated 1978
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*This physician has multiple office locations. See Office Information for details.