About Marilyn Heng, MD, MPH, FRCSC

Dr. Marilyn Heng is an attending surgeon with the Orthopaedic Trauma Service specializing in treatment of fracture, high-energy soft-tissue injuries, and post-traumatic complications of infection, nonunion, and amputation.  She also treats deformity and limb-length discrepancies using circular external fixators and lengthening IM nails.

Hailing from Toronto, Canada, Dr. Heng obtained her medical degree from the University of Toronto. She completed her Orthopaedic Surgery Residency at the University of Toronto in 2012 and is board-certified in Orthopaedic Surgery by the Royal College of Physicians and Surgeons of Canada and the American Board of Orthopaedic Surgery. She received subspecialty training in Orthopaedic Trauma from the Harvard Combined Trauma Fellowship at Massachusetts General Hospital and Brigham & Women's Hospital. She has also completed a second subspecialty fellowship in Orthopaedic Oncology from Mt. Sinai Hospital at the University of Toronto, Canada.

Dr. Heng plays an active role in the administration and innovation of specialty health care.  Since 2018, she has been an Assistant Medical Director for Population Health Management for Specialty Practices with the Mass General Physicians Organization (MGPO) coordinating hospital initiatives in Patient Reported Outcome Measures (PROMs) and Serious Illness Conversations (SIC).

Departments, Centers, & Programs:

Clinical Interests:



Orthopaedic Associates
55 Fruit Street
Boston, MA 02114-2696
Phone: 617-643-0149
Fax: 617-724-0010

Medical Education

  • MD, University of Toronto
  • MD, University of Toronto Faculty of Medicine
  • MD, University of Toronto, Faculty of Medicine
  • Residency, University of Toronto
  • Residency, University of Toronto Division of Orthopedic Surgery
  • Fellowship, Brigham and Women's Hospital and Massachusetts General Hospital
  • Fellowship, Mount Sinai Hospital

American Board Certifications

  • Orthopaedic Surgery, American Board of Orthopaedic Surgery
  • Orthopaedic Surgery, American Board of Orthopaedic Surgery
  • Orthopaedic Surgery, American Board of Orthopaedic Surgery
  • Orthopaedic Surgery, American Board of Orthopaedic Surgery

Accepted Insurance Plans

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.


Dr. Heng has completed a Masters of Public Health (MPH) degree through the Johns Hopkins Bloomberg School of Public Health, Baltimore, MD  with a certificate in Quality, Patient Safety and Outcomes Research.  Her research interests include improving patient quality of care through efficiency, management and directed measurement of patient outcomes related to performance.

She is interested in multi-disciplinary approaches to quality of care involving the collaboration of geriatricians, nursing, public-health professionals, and engineers with surgeons.


  • View my most recent publications at PubMed

    Select Publications:

    • Heng M, Wright JG. Dedicated operating room for emergency surgery improves access and efficiency. Canadian J Surg. 2013; 56(3): 167-174.
    • Heng M, Kwon JY. A percutaneous osteotomy for irreducible or malunited tongue-type calcaneus fractures. Foot Ankle Int. 2014; 35(4): 408-414.
    • Menendez ME, Ring D, Heng M. Proximal humerus fracture with injury to the axillary artery: A population-based study. Injury. 2015; 46(6): 1367-1371.
    • Heng M, Eagen CE, Javedan H, Kodela J, Weaver MJ, Harris MB. Abnormal mini-cog is associated with higher risk of complications and delirium in geriatric fracture patients. J Bone Joint Surg (Am). 2016 May 4; 98(9): 742-750.
    • Finger A, Teunis T, Hageman MG, Ziady ER, Ring D, Heng M. Association between opioid intake and disability after operative treatment of ankle fractures. J Am Acad Orthop Surgeons. 2017; 25(5): 519-526.
    • Heng M, McTague MF, Lucas RC, Harris MB, Vrahas MS, Weaver MJ. Patient perceptions of the use of medical marijuana in the treatment of pain following musculoskeletal trauma: A survey of patients at two trauma centers in Massachusetts. J Orthop Trauma. 2018; 32(1): e25-e30.
    • Van der Vliet QMJ, Hietbrink F, Casari F, Leenan LPH, Heng M. Factors influencing functional outcomes of subtalar fusion for posttraumatic arthritis after calcaneal fracture. Foot Ankle Int. 2018. 39(9): 1062-1069.
    • Basilico M, Bhashyam AR, Harris MB, Heng M. Prescription opioid type and the likelihood of prolonged opioid use after orthopaedic surgery. J Am Acad Orthop Surgeons. 2018 Oct 4. doi: 10.5435/JAAOS-D-17-00663.