Our Staff

At Back to Health Chiropractic, we recognize that your choice of a chiropractor in Southern Maine is driven both by the chiropractor's competency and personality. When searching for chiropractic treatment, you need a chiropractor who is experienced, understanding and supportive. You get this caring attitude from all the staff at Back to Health Chiropractic every day. Our staff works together as a team to ensure we are responsive to your needs and keep you informed about your health issues. We look forward to getting to know you.

Dr. Marc Dupuis

Board Certified Chiropractic Sports Physician

Clinic Director of Back to Health Chiropractic PC

Dr. Marc Dupuis, originally from southern Connecticut, relocated with his family to Sanford, Maine as a youth where he attended local schools and graduated from Sanford High School. Dr. Dupuis completed his undergraduate studies at the University of Maine at Orono, where he received a bachelor’s degree in Biology. Following his graduation from UMaine, he realized his passion was to work with people and health care seemed like a natural fit to combine his background in science and research while helping people achieve optimum health. While preparing to attend graduate school in an allopathic medical program, Dr. Dupuis gained hands on experience with patient care while working as an Emergency Medical Technician. It was during this time as an EMT that he developed back pain as a result of repetitive lifting of patients. Dr. Dupuis decided to see his family’s chiropractor and after one visit, he felt significant relief! Perhaps what was more surprising was that after a few visits he noticed improvements in his running and biking. This experience prompted Dr. Dupuis to shift his academic plans and attend graduate school at New York Chiropractic College. The Chiropractic Philosophy of helping individuals achieve health naturally without the use of drugs or surgery and its role in performance improvement of athletes resonated well with Dr. Dupuis’ own views on health.

In 2003, Dr. Dupuis graduated Magna Cum Laude from New York Chiropractic College, in Seneca Falls, New York.

In the winter of 2004, Dr. Dupuis was pleased to return to Maine where opened his practice, Back to Health Chiropractic, focusing on family care, athletic performance, injury prevention/treatment and rehabilitation.

Further Educational Experiences Focused on Athletic Treatment

In 2002 Dr. Dupuis had the privilege to study Elite Sports Science at the United States Olympic training center in Lake Placid, New York.

The summer of 2003 brought another excellent opportunity to examine, diagnose and treat patients at the Sports Medicine Specialty Clinic at Camp Geiger School of Infantry at Camp LeJune United States Marine Base, Jacksonville, NC.

Since the summer of 2007, Dr. Dupuis has functioned as Team Chiropractor for the Sanford Mainer’s Baseball Team, part of the New England College Baseball League.

Additional Training/Certifications

Since 2003, Dr. Dupuis has dedicated numerous hours of continuing education on the topics of whole food nutrition, therapeutic herbs and nutrition counseling.

In November of 2011, Dr. Dupuis obtained the postgraduate designation of Certified Chiropractic Sports Physician® (CCSP®) by the American Chiropractic Board of Sports Physicians™ (ACBSP™). The CCSP® certification requires the doctor to attend a minimum of 100 hours of a 120 hour postgraduate program. This instruction is specific to physical fitness and the evaluation and treatment of injuries encountered in sports. Following the completion of these hours, the doctor must then take and successfully pass a comprehensive written examination.

Dr. Dupuis is a certified Impulse Instrument adjusting chiropractor and is certified in the Webster Technique for pregnant patients. Dr. Dupuis also has advanced training in the application of Kinesio Tape.

Outside Interests

Dr. Dupuis enjoys leading an active lifestyle in various outdoor activities such as biking, hiking, running, skiing and surfing. He regularly competes in regional triathlons, has finished multiple half Iron distance races and is a two time finisher at Ironman Lake Placid. Dr. Dupuis is a member of the American Chiropractic Association, American Chiropractic Association's Sports Council, International Chiropractic Pediatric Associate, Kennebunk Beach Triathlon Club, Maine Chiropractc Association, Orthopedic Associates Triathlon Team.

Dr. Tyler Kuntz


Dr. Tyler Kuntz grew up in the small town of Mildmay in rural southern Ontario. He completed his ungraduated studies at the University of Guelph in June of 2014. While there he received his bachelor’s degree in Human Kinetics as well as a minor in Nutrition and Nutraceutical Sciences. From a young age Dr. Kuntz was very active in a variety of sports including hockey, softball, cross-country running and rugby. While playing many different sports Dr. Kuntz frequently relied on chiropractic care to overcome the injuries he sustained. It was also during this time that Dr. Kuntz realized the many benefits associated with chiropractic care in achieving optimal function, ultimately helping him perform at the highest level. This led Dr. Kuntz to pursue a career in chiropractic. The chiropractic philosophy of conservative care to restore proper bodily function and overall health as opposed to drugs and surgeries is something that Dr. Kuntz is very passionate about.

In February of 2018 Dr. Kuntz graduated Magna Cum Laude from Palmer College of Chiropractic in Davenport, Iowa. While studying at Palmer Dr. Kuntz was a Clinical Radiology Intern and a Chiropractic Rehabilitation and Sports Injury Intern. During his time at Palmer Dr. Kuntz was able to work with a wide range of patients while utilizing a variety of chiropractic techniques. Dr. Kuntz especially enjoys working with athletes and young children.

Dr. Kuntz's outside intrests include hiking, running, swimming or any other outdoor activities New England has to offer. Dr. Kuntz is an avid runner and he particularly enjoys trail running and competing in ultramarathons. Dr. Kuntz and his fiancee, Amanda, along with their German Shepherd enjoy spending their free time hiking on mountain trails.

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Karen Morris, CA

Karen is the Office Manager and Certified Chiropractic Assistant at Back to Health Chiropractic PC. She brings a number of years of management and administrative experience to our team. As a member of our patient care team as well as being the office manager, Karen is very active in numerous facets of our team and brings excellent energy to all the she does. In 2017 Karen was was recognized as the Maine Chiropractic Assistant of the Year.

Kim Small, CA

Kim has been a Chiropractic Assistant since 2005.  In 2010 Kim was recognized as the Maine Chiropractic Assistant of the year.  She is very passionate in assisting the doctors in achieving maximal health and wellness for all our patients.  She resides in Sanford with her two boys Cameron and Matthew.