Dr. O'Brien joined ENT Specialists in 2001. He graduated from Bowdoin College with a Bachelor of Arts in Chemistry in 1991. He then attended the University of Pennsylvania School of Medicine, earning his medical degree in 1996. Dr. O'Brien completed his residency training at Boston Medical Center (Boston University School of Medicine) which included training at the following institutions: Boston Medical Center, the Veteran Administration Medical Center, Lahey Clinic, and Boston Children's Hospital. Dr. O'Brien's medical interest include: sinus disease and sinus surgery, allergy, pediatric ENT, and ear surgery. Dr. O'Brien is board certified by the American Board of Otolaryngology.
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