Dr. Caissie's career spans 15 years in the healthcare field both as a surgeon and researcher but also as an innovator and entrepreneur in health tech.

In 2022, having been granted an Extraordinary Ability and Achievement EB1A status from the United-States Government for his contributions to sciences and business, Dr Caissie was then offered a Scholar position at Stanford University.

Dr Caissie was a clinical lecturer at both the University of Montreal and McGill University, and former Chief of Maxillofacial Surgery at Montreal’s HSC. He is a National Board Examiner and a Fellow of the Royal College in his specialty. Committed to advancing research in the field, he has published papers on both nerve regeneration and clinical maxillofacial surgery.

Dr Caissie’s medical background has enabled him to found multiple businesses in the healthcare sector, with a commitment to pioneering new technologies. These ventures include Medesync EMR, a web-based, electronic medical records solution for physicians, which was ultimately acquired by Telus, a large national telecommunications companies valued at $37 billion.

Dr Caissie also founded the GMMS Associates, a group of surgery specialty centres offering ENT, dentistry and maxillofacial surgery services. Dr Caissie led the growth of this business until its 2019 acquisition to DCC Holdings, a $2.5 billion company.

More recently, Caissie has had a significant role in the frontline fight against Covid-19, providing solutions to the immediate needs of medical professionals during the pandemic. In 2020, having seen firsthand the impact of insufficient PPE in hospitals, Dr Caissie co-designed a powered Full Head Protective Hood, including an air-purifying respirator, now being manufactured and distributed across Canada. As co-founder of Dorma Filtration, he co-designed the country’s first reusable N95 mask to help with critical shortages across North America.

In addition to his professional achievements, Dr Caissie is an accomplished mountain climber, and has conducted multiple high-altitude rescues. He is also a sailboat trans-oceanic racer, a SR22 Turbo aircraft pilot, and an Ironman World Championship qualifier.

He is committed to humanitarian work, utilizing his skills as a force for good. His NGO, Volte-Face, has provided over $1 million in free medical care to patients from poor socioeconomic backgrounds in need of life changing surgeries. He is also a board member for Sprouts, a California based non-profit organization helping youths facing hardships through skills coaching and internships.

Professional Affiliations and Activities

  • National Board Examiner, Canadian Royal College (2012 - Present)
  • Clinical Lecturer, McGill University (2010 - 2018)
  • Clinical and Faculty Lecturer, University de Montreal (2019 - 2021)
  • Chief of Surgery, HSC University de Montreal (2017 - 2020)

Education & Certifications

  • FRCD(C), Fellow of the Royal College of Canada, Maxillofacial Surgery (2008)
  • Surgical Rotation, Cornell University, Maxillofacial Surgery (2007)
  • MSc, Laval University, Quebec, Neurosciences, Medicine, Nerve Regeneration (2003)
  • Doctorate - DMD, Laval University, Doctorate: DM (2001)

Service, Volunteer and Community Work

  • Founder and Surgeon - Volte-Face Project: A non-profit organization

    Organization composed of a group of medical and dental professionals providing reconstructive or surgical care for indigent patients affected with severe cranio-facial abnormalities.

    • Manage the overall treatment plans with the medical and surgical team and execute maxillofacial surgeries when warranted.



Personal Interests

Ironman 70.3 and/or 140.6 triathlon finisher. Qualifications to world championships in 2015 and 2018 and 2019.

Competitive offshore sailing: Completed the “Quebec/St-Malo Trans-Oceanic Transat” in 2014.

Qualified pilot on Cirrus SR22 Turbo

All Publications

  • Cutaneous myiasis: diagnosis, treatment, and prevention. Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons Caissie, R., Beaulieu, F., Giroux, M., Berthod, F., Landry, P. E. 2008; 66 (3): 560-8

    View details for DOI 10.1016/j.joms.2007.09.005

    View details for PubMedID 18280395

  • Quantitative method to evaluate the functionality of the trigeminal nerve. Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons Caissie, R., Landry, P. E., Paquin, R., Champigny, M. F., Berthod, F. 2007; 65 (11): 2254-9


    The primary objective of this study was to yield normal range values, with a current perception threshold technique, that could be used to assess the functionality of the third division of the trigeminal nerve on a healthy population. Moreover, we wanted to evaluate the impact of gender and training on these values.Standardized current perception threshold (CPT) measures using constant alternating current sinusoid waveform stimulus at 5, 250, and 2,000 HZ were obtained from 50 healthy patients at the mental foramen area bilaterally using a Neurometer current perception threshold device (Neurotron Inc, Baltimore, MD) (2,000 Hz specifically stimulates Abeta fibers, 250 Hz Adelta fibers, and 5 Hz stimulates C fibers).The mean CPT values for the 2,000, 250, and 5 Hz groups were respectively, 157.6 +/- 54.67, 53.10 +/- 27.64, and 33.44 +/- 23.17 mAmp. These values were used to construct a CPT scale to classify patients in the hyperesthetic, normative, or hypoesthetic range. There were no significant differences when comparing CPT values in men and women except in the 2,000 Hz group (P < .02; n = 23). In addition, the test was carried out a first time on the right side and a second time on the left. This training procedure showed a significant decrease in the CPT values in men at 2,000 Hz (P < .01; n = 23) for the second measure.The Neurometer can be beneficial for the evaluation and intraneural localization of sensory dysfunctions associated with the third division of the trigeminal nerve. It also could be used for initial diagnosis and subsequent evaluation of the patient's neurologic status through the course of their condition.

    View details for DOI 10.1016/j.joms.2006.09.010

    View details for PubMedID 17954322

  • In vivo enhancement of sensory perception recovery in a tissue-engineered skin enriched with laminin. Biomaterials Caissie, R., Gingras, M., Champigny, M. F., Berthod, F. 2006; 27 (15): 2988-93


    The use of autologous reconstructed skin appears to be a promising treatment for the permanent coverage of deep and extensive burns. However, the capability of reconstructed skin transplanted on wounds to promote recovery of sensory perception is a major concern. Our aim was to assess the effect of laminin on cutaneous nerve regeneration. We prepared collagen-chitosan sponges enriched with 0, 1, 10 or 50 microg of laminin/sponge to produce tissue-engineered reconstructed skins by culture of human fibroblasts and keratinocytes, then grafted on the back of athymic mice for 120 days. Immunohistochemical studies demonstrated that there were 7 times more neurofilament 150 kD-positive nerve fibers migrating in the graft in the samples enriched with 10 microg laminin/sponge, compared to reconstructed skin without laminin, 120 days after graft. A significant improvement in the current perception threshold of the Abeta and Adelta nerve fibers was measured using a Neurometer in all grafts enriched with laminin. In addition, the type C nerve fibers reached an identical current perception threshold than mouse skin, in all reconstructed skins enriched or not with laminin. We conclude that the use of a tissue-engineered autologous skin graft enriched with laminin has the potential to efficiently optimize cutaneous sensory nerve regeneration in vivo.

    View details for DOI 10.1016/j.biomaterials.2006.01.014

    View details for PubMedID 16448695

  • Iatrogenic paresthesia in the third division of the trigeminal nerve: 12 years of clinical experience. Journal (Canadian Dental Association) Caissie, R., Goulet, J., Fortin, M., Morielli, D. 2005; 71 (3): 185-90


    Iatrogenic paresthesia in the third division of the trigeminal nerve remains a complex clinical problem with major medicolegal implications. However, most lawsuits can be prevented through better planning of procedures and by obtaining informed consent. The purpose of this article is to present the authors" clinical experience over the past 12 years, to review the principles of prevention and management of trigeminal paresthesia and to highlight the resulting medicolegal implications.The files of all 165 patients referred to the oral and maxillofacial surgery department for evaluation of iatrogenic paresthesia in the third division of the trigeminal nerve were reviewed. The characteristics of the subgroup of patients who had taken an attending dentist to court were compared with those of the other patients.Surgical extraction of impacted molars was the main cause of paresthesia in 109 (66%) of the 165 subjects. The alveolar nerve was affected in 89 (54%) subjects, the lingual nerve in 67 (41%) subjects, and both nerves were affected in 9 (5%) subjects. There were more female than male patients (ratio 2.2:1). Lawsuits were initiated in 33 (20%) of the cases; patients who initiated lawsuits were younger, were more likely to have experienced anesthesia and were more likely to need microsurgery (all p < 0.001). Poor surgical planning and lack of informed consent were the most common errors on the part of the dentists.An accurate evaluation of surgical indications and risk, good surgical technique, preoperative informed consent and sufficient postoperative follow-up should help to reduce the frequency of neurosensory deficits after dental treatment and attendant lawsuits.

    View details for PubMedID 15763037

  • Laminin enhances nerve regeneration in a tissue-engineered skin transplanted on nude mice – abstract Caissie, R., Berthod, F. Can. J. Neurol. Sci.. 32; Suppl. 1; S29. 2005
  • Evaluation of nerve regeneration across a peripheral nerve gap using a collagen nerve conduit filled with a collagenbased biomaterial associated with different neurotrophins Can. J. Neurol. Sci. Caissie, R., Jacques, L., Landry, P., Berthod, F. 2005; 32