Meet your team

David Middleton, BS, DC, CCEP


I was born and raised in Titusville, Pennsylvania; a small town in the north western corner of the state. Our claim to fame includes being the birthplace of the oil industry, home to “muckrakers” like Ida Tarbell as well as the legendary John Heisman. After serving 5 years active duty in the United States Army as a Medic, I worked towards my Bachelor of Science degree at the US Military Academy and Penn State University. I knew that I wanted to help people in some capacity through the healing arts.  Chiropractic was introduced to me on the rugby pitch!  Having been an athlete my whole life, culminating competitively as a collegiate Division I wrestler and the Division I Rugby National Final Four, I keenly understood the importance of function and adaptability to maintain health.  I appreciated the holistic approach of chiropractic.  I knew that even though at the time it was considered non-traditional and somewhat controversial, it was the right choice for me.  I earned my Doctor of Chiropractic Degree from the “fountainhead” of our profession, the prestigious Palmer College of Chiropractic in Davenport, Iowa in February 1998. Following graduation, I was offered a job in Edinburgh, Scotland, where chiropractic was considered a “shortage” profession. I saw this as an exciting opportunity to experience life overseas as well as to potentially help shape the future of chiropractic in Great Britain. I stayed in beautiful Edinburgh for a year before moving to the Newcastle (northeast) area of England. I started two additional practices as an Associate Doctor before opening my own clinic in December 2000, with my wife Amy.

One of the highlights of my practice in England was working closely with professional athletes and teams. I was the team chiropractor for premiership football (soccer) teams Sunderland AFC and Middlesboro FC and worked on a consultancy basis with several other players from teams including the USA national team, Swedish national team, Dutch National Team; professional and club level rugby players throughout the northeast; equestrians of all levels; boxers; competitive runners.  I also worked with many British Olympic and Para-Olympic athletes. (Despite holding the trust of elite and amateur athletes alike, my own children, all accomplished athletes in their own right, of course still question my advice!)   Although these professional associations were exciting, the most rewarding part of practice was family practice, treating the young and the old from 1 day old to 100!

Despite our success in England, after 7 years of practice, we decided it was important to raise our children in America and made the decision to return to New England, where my wife was raised. We made the move to the wonderful seacoast of New Hampshire in January 2005 and could not be happier with our decision and feel that we have found the best possible home-town for our 6 children!

In order to better serve myself and my patients, I am dedicated to continued education and training. I have advanced training in Sacro-Occipital Therapy, Cox Flexion Distraction Therapy, Active Release Techniques, Pediatric Assessment and the Webster Technique.  I am a Certified Chiropractic Extremity Practitioner (CCEP) and in 2010, completed course work to become a Certified Chiropractic Wellness Lifestyle Practitioner (CCWP) through the international Chiropractic Association. Currently, I am working towards a Diplomat in Functional Pediatric Neurology. In addition to being a Doctor of Chiropractic, I am also Board Certified in Physio Therapy.  I am a member of the International Chiropractic Association, the American Chiropractic Association, The International Pediatric Chiropractic Association, The International Federation of Sports Chiropractic, The Council of Extremity Adjusting and the NH Chiropractic Associations. I also continue to live vicariously through numerous elite athletes as the team Chiropractor for the UNH Men’s and Women’s Hockey.

In all our years of practice, we credit our success not only to our commitment to providing the absolute best in comprehensive, individualized chiropractic care, but also to our dedication to providing the same customer service and welcoming atmosphere that we would expect for our own family and friends. In addition, we simply care about the people we serve, love what we do and are committed to surrounding ourselves with staff members with like purpose.

We welcome every member of our community at Middleton Chiropractic and look forward to being a partner in the accomplishment of your health goals. Feel free to call in or stop by any time to have your questions answered or to schedule an appointment.


Kevin Sandberg, DC

I have been proudly serving the Seacoast of New Hampshire through chiropractic since my 2000 graduation from New York Chiropractic College.  Throughout the years, I have witnessed not only how chiropractic can help people manage life altering symptoms associated with low back pain, headaches, and neck pain but also how it helps maximize vitality, health and wellness.  It is truly exciting to have played an active role as people discover that true health is really so much more than being free of pain.

My own Chiropractic story began while studying Human Bio-mechanics and Kinesiology at the University of Wisconsin.  I had been suffering with low back pain for over a year.  The pain began to affect even the simplest every day activities like leaning over the sink to shave! In growing frustration, I decided to accept a referral to the Gonstead Clinic in Mt. Horeb, Wisconsin.  After a series of chiropractic adjustments, I was completely pain free.  This experience coupled with my education in Biomechanics and a genuine desire to help people made Chiropractic seem like the obvious career choice for me. 

Outside of practice, I love spending family time with my wife and two young children.  I also enjoy being an outdoorsman, Crossfit and playing guitar. 


Alex Marquignon, BS, DC

I was born and raised in France near the beaches of Normandy.  I have been a competitive athlete my whole life focusing on Judo and later American football through High School.  I went on to play College Football at The University of Sioux Falls in South Dakota, where I earned a Bachelor of Science Degree in Exercise Science.  After graduation, I decided that my true purpose was in the field of health with an emphasis on physical performance and rehabilitation.  Because I had been personally impacted by chiropractic throughout my athletic career, I decided to enroll to become a Doctor of Chiropractic at Palmer College.  As a member of the Men’s Rugby Team throughout my time at Palmer, I continued to experience the benefits of chiropractic with the reduction of injuries, increased performance, and recovery.  This experience only further reinforced and enhanced my enthusiasm for my amazing profession and I can’t wait to share my commitment to delivering excellence in Chiropractic care with my new community here in the Seacoast of New Hampshire!

In keeping with my love of sports and movement, I am currently pursuing advanced training and certification as a Certified Chiropractic Sports Physician (CCSP) as well as Strength and Conditioning (CSCS).  I am also certified in the Webster Technique, which is a specialized approach to adjusting pregnant woman.  I am excited to serve patients of all ages at any point on their individual health and wellness journey. 


Daniel Kyparissis, BS, DC

I was born and raised in Wayne, New Jersey. Growing up, most of my summers were spent camping in the White Mountains. It is an incredible feeling to come back and begin my chiropractic career in an area that has given me so many amazing memories.

I have a passion for helping newborns, infants, toddlers, and expectant mothers.  My parents brought me to a chiropractor as an infant to help with colic; and then again when I had low back pain from wrestling in high school. This is ultimately what led me to become a chiropractor.

Understanding the importance of the nervous system and how it controls and coordinates every cell, tissue and organ in the body continues to give me so much purpose in being able to help patients restore optimal function through the power of a chiropractic adjustment.  

Another focus in practice is helping veterans and active-duty members of our military.  Coming from a large military family, I truly value their many sacrifices and feel committed to making sure they have access to the best possible care.   

Sports has always been a major part of my life including playing Division I men’s rugby.  While at chiropractic school, I pursued advanced training in the evaluation and management of sports related injury, injury prevention and performance enhancement.  I served as a rehab assistant in the student clinics at Palmer College of Chiropractic and am actively working towards the completion of an advanced certification as a Chiropractic Sports Physician (CCSP).  I look forward to working with athletes at all levels to help them achieve personal best on and off the field.  

When I am not at the office, I enjoy doing outdoor activities such as hiking, rock climbing, playing rugby, and snowboarding.


Kimberly, Chiropractic Assistant


Ali, Chiropractic Assistant