Anne O’Neill

Anne O'Neill

MBBCh MMedSci MSc FRCS(Plast) PhD

Associate Professor


Dr. Anne O'Neill joined the Division of Plastic and Reconstructive Surgery at University Health Network as an Assistant Professor at the University of Toronto in 2013. Dr. O’Neill received her medical degree from the National University of Ireland graduating with honors in 1999. She commenced her surgical training in 2000 and was awarded an Associate Fellowship of the Royal College of Surgeons in Ireland in 2002. She subsequently commenced sub-specialization in Plastic and Reconstructive Surgery and was awarded her Fellowship of the Royal College of Surgeons in this discipline in 2011. She completed a clinical fellowship in microsurgery and breast reconstruction at University of Toronto in 2012. Her clinical interest is in oncological reconstruction including breast, extremity and head and neck reconstruction.

In parallel with her clinical training Dr. O’Neill completed a Masters in Medical Sciences and then a PhD at the National University of Ireland, conducting her research at the Massachusetts General Hospital and Harvard Medical School in Boston where she was a research fellow. In 2012 she completed her second Master of Science Degree in Translational Medicine at the University of Edinburgh. She has presented her research at many international conferences and has also published a number of scientific papers. She works as a Surgeon-Investigator at University Health Network with a specific interest in breast and sarcoma reconstructive surgery outcomes as well as the oncological safety of stem cells in breast reconstruction.

Areas of Specialty

Oncological reconstruction of the breast, extremities and head and neck

Practice Hospital

Mount Sinai Hospital, Toronto General Hospital (UHN)




Mary Cabaron

Practice Location

Toronto General Hospital
200 Elizabeth Street
Toronto, Ontario
M5G 2C4


(416) 340-3143


(416) 340-4403

Referral Instructions
Research Interests

• Oncological safety of stem cells in breast reconstruction.
• Outcomes of oncological reconstruction in breast cancer and sarcoma.