Dr. Mark Brown is a board-certified comprehensive ear, nose and throat (ENT) surgeon who also serves as medical director of Mass Eye and Ear, Concord. At Mass Eye and Ear, Concord, Dr. Brown continues to practice comprehensive ear, nose and throat care and sees adult patients only. Dr. Brown's interests include public health equity, business operations and general otolaryngology. More specifically, his clinical interests include medical and surgical treatment of nasal and sinus conditions, surgery of the thyroid and salivary glands and head and neck cancer treatment.