Board Members



President & Founder

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After studying at York University, Gordon attended the Canadian Memorial Chiropractic College (CMCC), from which he received his Doctor of Chiropractic. He then went on to Post Graduate training in London, England at the London School of Hygiene and Tropical Medicine, University of London. His first employment was with the FAO of the United Nations in Rome and then Central America. Returning to Canada, he began private practice in Toronto and also taught at York University as well as at CMCC where he began teaching in 1979 and remains on faculty as Assistant Professor. He has been involved in teaching many courses (nutrition, ethics, geriatrics, principles and practise, instrumented soft tissue therapies (Graston) as well as supervising many research projects on various topics. He has been on post graduate faculty of many institutions, including CMCC, New York Chiropractic College, National Health University, Southern California University of Health Sciences (LACC), Durban University of Technology. He has published many papers over the years. He has lectured and participated in conferences internationally in Europe, North and South American, Africa and Australia.

Gordon holds specialization certification in Nutrition (Diplomate Clinical Board of Nutrition), Sport (Royal College of Chiropractic Sports Sciences) and Orthopaedics (College of Chiropractic Orthopaedic Specialists). He is also a Diplomate of the Canadian Academy of Pain Management.

Gordon has served on many boards and committees such as the College of Chiropractors assessor for licensing, Canadian Society of Chiropractic Evaluators, College of Chiropractic of Orthopaedic Specialists, Editor of Nutritional Perspectives, American Board of Clinical Nutrition, Ontario Nutrition Council, Ontario Triathlon Association. Gordon served at the Athens and Vancouver Olympics as well as the Pan Am Games. He volunteered at Evergreen, Yonge Street Mission for Street Youth for 15 years.

He has worked in multi-disciplinary medicine for most of his career, including practicing in the Canadian Centre for Integrative Medicine, Toronto Interventional Pain Specialist Clinic, and Disability Designated Assessment Centres. He is founder, owner and president of Maxabilitation, a multi-disciplinary medical assessment firm. He has been qualified as an expert witness on numerous occasions at the Ontario Superior Court as well as the Financial Services of Ontario. He completed certification through the American Board of Forensic Professionals in the AMA Guides to the Evaluation of Permanent Impairment (4th Edition). He has been selected as an assessor in the ISAEC programme in the Central LHIN based out of Markham Stouffville Hospital.

Gordon has been in continuous clinical practice for over 40 years caring for patients from an evidence informed medicine and wellness perspective. His mottos of care are: salus aegroti suprema lex (the welfare of the patient is the supreme law) and primum non nocere (first do no harm).

Gordon has been honoured with the following: Life Member, Royal College of Chiropractic Sports Sciences (Canada); Lifetime Member, American Clinical Board of Nutrition; Dr. Michael Brickman Heart and Hands Award from OCA; Award of Merit, The Canadian Society of Chiropractic Evaluators; Pioneer Award, The Royal College of Chiropractic Sports Sciences (Canada); Fellow of the International College of Chiropractors.

Gordon was on the founding board of the Royal College of Chiropractic Sports Sciences as Secretary Treasurer and was the second president. He has continued to be involved as Royal Liaison. He is the founder and president of the FOUNDATION for the ROYAL COLLEGE OF CHIROPRACTIC SPORTS SCIENCES.

In his personal life, Gordon is married to Dr Susan Gillis-Lawson, to whom he attributes most of his success and they have three children. He is an avid hockey player, Nordic skier and cyclist. He enjoys philosophy and religion. He eats well but still remains short!


John Crawford BSc (Hons), MSc, PhD (Path), DC, FRCCSS(C)


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Dr. Crawford completed his Honours Bachelor of Science and Master of Science Degrees at Western University in London, Ontario, followed by his PhD in Pathology at the University of Toronto Medical School.

After graduating from the Canadian Memorial Chiropractic College (CMCC) Toronto, he obtained Fellowship status from the Royal College of Chiropractic Sports Sciences (Canada). He currently serves as Vice-President of the Foundation - RCCSS(C). He has been an educator in the fields of Microbiology, Anatomy, Physiology, Pathology, Neurology, Geriatrics and Clinical Diagnosis, lecturing to nurses, chiropractors, naturopaths, massage therapists, dental, medical and paramedic students. He holds the rank of Associate Professor at CMCC.

As an Independent Physical Examiner, he has served on the roster of the Financial Services Commission of Ontario. He is a fully certified Functional Capacities Evaluator and is certified by CMCC as an Independent Chiropractic Examiner. Dr. Crawford also holds certification through the American Board of Forensic Professionals in the AMA Guides to the Evaluation of Permanent Impairment (4th Edition). He is a past member of a member of the Quality Committee of Hospice Wellington, Guelph, Ontario.

He serves on the Board of the Canadian Society of Chiropractic Evaluators and is a founding member of the Foundation - RCCSS(C). He is a past Board Member of The Canadian Academy of Pain Management, an organization through which he has achieved Diplomate status. In addition, Dr. Crawford is a vestibular therapist and a certified Cognitive Functional Capacities Evaluator. He is trained in the diagnosis and management of concussion-related disorders.

Dr. Crawford continues to teach and currently engages in clinical practice and university-based neuroscience research. He keeps balance in his life by participating in golf, baseball, cycling, hockey and weight-training. He is an avid musician / songwriter.


David Gryfe BSc, DC, FRCCSS(C)


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Dr. David Gryfe graduated Magna Cum Laude from CMCC in 1992 after completing a degree in chemistry from the University of Western Ontario. He is certified in needle acupuncture and obtained Fellowship status in the Royal College of Chiropractic Sports Sciences (Canada) in 1999. In addition to full time practice he is a chiropractic consultant to Woodbine Race Track, and author of “Always Beginning – a beginner’s guide to Tai Chi.” He serves on the Boards of CMCC and World Spine Care as well as the Specialties Accreditation and Standards Policies Committee of the Federation of Canadian Chiropractic. Dr. Gryfe also serves on the Editorial Board of the Journal of the Canadian Chiropractic Association. He is a founding member and director of the Foundation for the Royal College of Chiropractic Sports Sciences. David is married with two sons; he is actively involved in a variety of sports including squash, hockey, golf and touch football.


Rocco Guerriero, B.Sc., DC, FRCCSS(C), FCCPOR(C), FCCOS(C)


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Dr. Guerriero is an associate professor at the Canadian Memorial Chiropractic College (CMCC) with 30 years of chiropractic teaching experience. Currently, he is the coordinator of the Motor Vehicle Accident and Rehab rounds for chiropractic interns at the Canadian Memorial Chiropractic College. He was also the course coordinator of the clinical diagnosis courses in Orthopaedics for first and second year students at CMCC for over 25 years. He is still lecturing in these courses. He has been in clinical practice since 1988 and served as Past-President of the Canadian Society of Chiropractic Evaluators, Past-President of the College of Chiropractic Orthopaedic Specialists (Canada). He previously served on the Board of Directors for the Canadian Society of Medical Evaluators (CSME). He is currently the Vice-President of the Association of Independent Assessment Centres (AIAC). He is Treasurer of the Foundation of the Royal College of Chiropractic Sports Sciences (Canada). He has his designation as a Chiropractic Specialist in Orthopaedics, Rehabilitation Sciences and Sports Sciences.

He has published numerous scientific articles in the areas of Disability, Medical and Rehabilitation and Medicolegal issues. He is an expert in Chiropractic Malpractice cases and have been accepted as an expert in Ontario, Alberta and in British Columbia. He is currently registered to practice chiropractic in Ontario, BC and Alberta. He has also provided numerous post-graduate seminars in New Brunswick, Quebec, Ontario, Manitoba, Alberta, Saskatchewan and British Columbia.

He served on numerous Government-appointed committees in policy development and implementation related to Auto Insurance. He was the founder and Pat President of the Association of Designated Assessment Centres. He served on the Minster’s DAC committee from 1996-2006. He was part of the consensus working group involved in Auto Insurance Reform in 2002. He was the Co-chair of the DAC Reform working Group in 2003 and did a Webinar on behalf of IBC and FSCO. He was on the Superintendent's RISC committee overseeing the new SABS and its implementation on September 1, 2010. He is presently on the Service Provider Licensing Stakeholder Implementation & Best Practices Forum committee with the MOF/FSRA representing the AIAC.

He is the course coordinator of the CMCC/CSCE Post-graduate Certification course on Catastrophic Determination and AMA Guides Impairment rating. He is certified in the 4th and 5th edition of the AMA Guides in Impairment rating and has training in the 6th edition. He has successfully passed and completed all 6 IME and Medicolegal Insurance courses offered by the University of Montreal. He was a member of the Whistler Medical Team for the Vancouver 2010 Winter Olympic Games and was the lead Medical Practitioner for the Golf and Rugby venues at the Toronto 2015 PanAm and Para PanAm Games. He has been the keynote speaker at numerous global Rehabilitation Conferences.


John De Finney, DC, FRCCSS(C)


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Dr. John De Finney is a bilingual chiropractor with a Bachelor of Physical and Health Education and a Specialty in Sports Chiropractic. He graduated from the Canadian Memorial Chiropractic College in 1976. He is a co-founder of the Canadian Chiropractic Sports Academy which became the Royal College of Chiropractic Sports Sciences. He is one of its first three Fellows. He was secretary-treasurer and head of the fellowship program. He was granted a Pioneer Award by the RCCSS(C) and is a Life Member. Dr. De Finney is a co-founder of the Foundation for the Royal College of Chiropractic Sports Sciences (Canada) and serves as Secretary. He is still involved in a variety of recreational sports and has won national titles and set several Canadian records as an age class runner. He was the first chiropractor to win a gold medal in the Medical Games. He is a co-founder of the Run for Chiropractic Education which was renamed the Backs in Motion. He continues to be the technical director for the run which has raised over $2,000,000 in its 36 years of existence. He is a member of the CMCC Governors’ Club for 31 years and was on the Board of Governors of CMCC from 2012 to 2014. He has lectured at the undergraduate and post graduate level and published articles on sports injuries and treatment. He continues to practice part time in a multi-disciplinary clinic in Markham, Ontario.

Susan Gillis Headshot.jpg



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Dr. Gillis graduated from the University of Western Ontario on the Dean’s Honour List and from the Canadian Memorial Chiropractic College cum laude, receiving honours such as the Jurisprudence award.

She has been active in post-graduate education completing a fellowship in Acupuncture with the International Academy of Clinical Acupuncture. Dr. Gillis worked as an occupational consultant for several companies and has attended many post-graduate courses and seminars, keeping up to date on the latest techniques as well as research and development.

Susan has been trained and lectured at the post graduate level in Aquatherapy and has also been trained and obtained certification status in Neuroemotional Technique (NET) and Neuroemotional Anti-Sabotage Technique (NEAT) which deals with the emotional aspect of our health and how stress can play a role. She has presented a research poster in Europe on NET and co-authored with other board members the History of Sports Chiropractic prior to 1994. She was nominated for the Toronto Life magazine “Women Who Make a Difference” award for her community involvement locally and internationally.

She is a member-at-large on the FOUNDATION board. Susan is also a Director of MaxAbilitation Inc. and on two other charitable organization boards as well as a mortgage investment corporation board. Her objective is to help people to achieve their maximum potential and be truly healthy in body, mind and spirit.

Dr. Gillis has a special interest in balancing professional and family life and encouraging a holistic perspective to health and wellness. She is married to Dr. Gordon Lawson (nearly a full time job in itself 😊) and they have three wonderful children.