Dr. Ian Witterick

MD, MSc, FRCSC
Clinician Scientist

Surgeon-in-Chief
Department of Otolaryngology (Surgery), Mount Sinai Hospital

Innovation in head and neck surgery, oncology and thyroid disease

We lead and collaborate on research that advances innovation in skull base and sinus surgery, head and neck oncology and thyroid disease management. Working across disciplines and institutions, we aim to optimize diagnostic accuracy, enhance surgical precision and improve patient outcomes.

Our team has developed molecular diagnostic tools to better stratify thyroid nodules, which are abnormal cell growths in the thyroid and reduce unnecessary surgeries. We’ve also pioneered approaches to compare open and endoscopic surgical techniques, helping quantify their impact on quality of life and oncologic control. During the COVID-19 pandemic, we contributed to national studies assessing the effects on cancer care delivery and surgical timeliness, guiding policy and recovery planning.

In addition to procedural innovation, we investigate how surgical mentorship, digital education tools and quality indicators improve training and long-term outcomes. Our research into perioperative technologies, such as smartphone-based applications and digital polymerase chain reaction (PCR) platforms, reflects our commitment to advancing personalized, data-driven care.

Ultimately, our work helps translate clinical insights into practical solutions, shaping safer, more efficient and more equitable care for patients with complex head and neck, cancerous and non-cancerous, conditions.

Telephone
Contact

Email: [email protected]

Image
Icon_Map
Location

Room 481, 600 University Avenue
Toronto, M5G 1X5

Image
SH_Icon_Links
Related links

Publications: PubMed
Google Scholar: Ian Witterick 
ORCID: 0000-0001-5612-481X
Sinai Health Chief of Service Profile: Ian Witterick

Accordion Items
  • 2024–present; Surgeon-in-Chief, Sinai Health, Toronto
  • 2024–present; Leadership Sinai Chair in Surgery, Sinai Health, Toronto
  • 2009–present; Professor, Department of Otolaryngology - Head & Neck Surgery, University of Toronto, Toronto
  • 2009–present; Professor, Department of Surgery, University of Toronto, Toronto
  • 2007–present; Steering Committee, World Congress on Thyroid Cancer
  • 1999–present; Department of Surgical Oncology, Princess Margaret Cancer Centre, Toronto

Former appointments 

  • 2021–2024; Chair, Skull Base Surgery Section, American Head and Neck Society
  • 2019–2021; President, Canadian Society of Otolaryngology-Head & Neck Surgery
  • 2018–2024; Alex & Simona Shnaider Research Chair in Thyroid Oncology, Sinai Health, Toronto
  • 2017–2018; President, North American Skull Base Society
  • 2012–2024; Otolaryngologist-in-Chief, Sinai Health, Toronto
  • 2012–2022; Chair, Department of Otolaryngology – Head & Neck Surgery, Temerty Faculty of Medicine, University of Toronto (George and Helen Vari Chair 2020-2022), Toronto
  • 2009–2025; Associate Member, Institute of Medical Science, University of Toronto, Toronto
  • MSc, Clinical Epidemiology, Health Policy, Management and Evaluation, University of Toronto, Toronto; 2005
  • Clinical Fellow with Dr. Michael Hawke, Rhinology, St. Joseph’s Health Centre, Toronto; 1993
  • Clinical Fellow, Head & Neck Surgery with Dr. Patrick J. Gullane - Joint Council for Approval of Advanced Training in Head & Neck Oncologic Surgery, The Toronto Hospital, Toronto; 1992
  • MD, Western University, London, Ontario; 1986
  • 2024 – MD Program Teaching Excellence Award.

    To recognize faculty, residents, graduate student teachers and clinicians in the MD Program that have attained exception Teaching Evaluation Scores. 
     
  • 2022 – Guest of Honour, 6th Congress of the Confederation of European Otolaryngology Head & Neck Surgery, Milan, ltaly
  • 2018 – Presidential Citation, The American Head & Neck Society, United States (Distinction)

    In recognition of your contributions to Head and Neck Surgery and to Medicine.
     
  • 2017 – Lifetime Achievement Award, Journal of Otolaryngology - Head and Neck Surgery, Canadian Society of Otolaryngology – Head and Neck Surgery, Canada (Distinction)
  • 2013 – Educational Excellence Award, Canadian Society of Otolaryngology - Head and Neck Surgery, Canada (Distinction)

    The Educational Excellence Award is intended to honour an individual who has made a significant impact in the area of medical education at a national and/or international level.
     
  • 2011 – Charles Mickle Fellowship Award, Faculty of Medicine, University of Toronto

    Awarded to “an individual who has contributed greatly to medicine during the past ten years”.
     
  • 2007 – Postgraduate Medical Education Award for Development and Innovation, Faculty of Medicine, University of Toronto 

    To “recognize outstanding contributions of faculty members who teach medical residents and fellows; develop, organize and administer training programs; develop innovative approaches to teaching, research, and evaluation; or serve as mentors and advocates to postgraduate medical trainees”.
     
  • 2005 – Presidential Citation, The American Head & Neck Society, United States (Distinction)

    In recognition of your contributions to Head and Neck Surgery and to Medicine.
     
  • 2004 – The Colin R. Woolf Award for Long-Term Contribution in Continuing Education, Faculty of Medicine, University of Toronto, Toronto
  • 2003 – Teacher of the Year Award, Dept of Otolaryngology - Head & Neck Surgery, Faculty of Medicine, University of Toronto, Toronto

Notable publications

Multi‐institutional comparison of quality of life between open versus endoscopic skull base approaches

Laryngoscope Investigative Otolaryngology, 2025

Discriminating interpatient variabilities of RAS gene variants for precision detection of thyroid cancer

JAMA Network Open, 2024

Facilitation of definitive cancer diagnosis with quantitative molecular assays of BRAF V600E and TERT promoter variants in patients with thyroid nodules

JAMA Network Open, 2023

Revised recommendations from the CSO-HNS taskforce on performance of tracheotomy during the COVID-19 pandemic – what a difference a year makes

Journal of Otolaryngology, 2021

Development of a molecular assay for detection and quantification of the BRAF variation in residual tissue from thyroid nodule fine-needle aspiration biopsy specimens

JAMA Network Open, 2021

Join our team

Visit our job board to see research positions.