William C. Faquin, M.D., Ph.D.

Professor of Pathology, Harvard Medical School


ENT Pathology

Board Certification

  • Anatomic Pathology, Cytopathology

Main Campus
243 Charles Street
Boston, MA 02114
Phone: 617-573-3159
Fax: 617-573-3389
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Specializing in the field of head and neck pathology and cytopathology, Dr. William Faquin serves as the Director of Head and Neck Pathology at Mass. Eye and Ear and Mass General, and is a Professor of Pathology at Harvard Medical School. Dr. Faquin received his medical degree from Harvard Medical School and PhD in cellular and developmental biology from Harvard University. He completed his residency in anatomic pathology at Brigham and Women's Hospital, where he also did a fellowship in cytopathology.

Dr. Faquin has authored more than 200 peer-reviewed publications and has co-authored books on head and neck cytohistology, salivary gland cytopathology, and thyroid cytopathology. Dr. Faquin is a co-author of the Bethesda System for Reporting Thyroid Cytopathology, co-chair of the College of American Pathologists Evidence-Based Guidelines Committee for the testing of head and neck squamous cell carcinomas for high-risk HPV, and co-chair of the Milan System for Reporting Salivary Gland Cytopathology sponsored by the ASC and IAC. He has also taught and directed numerous local, national, and international seminars, workshops, and courses. 

Dr. Faquin specializes in cytopathology of the head and neck and the thyroid gland, and his current research interests involve translational studies pertaining to the detection, diagnosis, and prognostication of cancers of the thyroid and salivary glands, squamous cell carcinomas of the oropharynx, and tumors of the jaws and oral cavity.