Meet The Team
Chiropractor
Alex Marquignon, DC, CCSP
Dr. Marquignon is a Doctor of Chiropractic and Certified Chiropractic Sports Physician. Dr. Marquignon serves as one of the chiropractors for the UNH Wildcats athletics. He has advanced training in assessing and adjusting extremities (shoulder, hip, knee, etc). Dr. Marquignon is excited to serve patients of all ages at any point in their individual health and wellness journey.
Dr. Marquignon was born and raised in France near the beaches of Normandy. He has been a competitive athlete his whole life, focusing on Judo and, later, American football through High School. He went on to play College Football at The University of Sioux Falls in South Dakota, where he earned a Bachelor of Science Degree in Exercise Science, before attending Palmer College of Chiropractic in Iowa.
As a member of the Men’s Rugby Team throughout his time at Palmer, he continued experiencing the benefits of chiropractic with the reduction of injuries, increased performance, and recovery. This only further reinforced and enhanced his enthusiasm for choosing this career path.
Chiropractor
David Rivera, DC, SpBAP
Dr. Rivera enjoys working with all types of patients by helping them realize the great benefits of chiropractic care. He is passionate about working with pregnant and postpartum women, and the pediatric population which led to additional training and subsequent Webster Technique and Perinatal Care certifications.
Dr. Rivera is a Spinning Babies Aware Practitioner and prioritizes a physiological approach to birth that helps the baby achieve an optimal position in the womb. Dr. Rivera is also proficient in the Activator technique - a gentle adjusting technique for patients with osteoporosis.
After discovering chiropractic from sustaining injuries playing tennis, he became motivated to become a chiropractor and help people achieve health through chiropractic care. He attended Life University in Georgia, where he graduated summa cum laude in 2018. Prior to attending chiropractic school, he obtained a Bachelor of Science in Athletic Training at the University of Puerto Rico, where he helped manage collegiate athletes and their injuries.
Outside the office, Dr. Rivera is a tennis enthusiast and also enjoys archery, bouldering, and escape rooms. Dr. Rivera looks forward to serving the seacoast community for years to come.
Chiropractor
Zach Zdrada, DC
Dr. Zdrada is a dedicated chiropractor who enjoys working with patients of all ages and backgrounds. He specializes in chiropractic adjustments and soft tissue work, recognizing the added benefits of muscle and fascia care in enhancing overall treatment outcomes.
With a passion for movement and optimal health, Dr. Zdrada helps his patients achieve pain relief, stability, and long-term wellness through personalized care. His approach emphasizes the body's ability to heal and perform at its best,
making chiropractic care an essential part of a healthy lifestyle.
Born and raised in New Hampshire, Dr. Zdrada is proud to be practicing
in his home state, helping people stay active and healthy. Dr. Zdrada
grew up enjoying the great outdoors and organized sports in school. He
wrestled Division 1 at Brown University, where he studied biology and
was first introduced to chiropractic care after experiencing a low back
injury. Seeing firsthand the benefits of chiropractic care—especially in
sports performance and recovery—he pursued his passion at Palmer College
of Chiropractic in Port Orange, FL. Now back home, Dr. Zdrada is excited
to be providing quality chiropractic and personalized care for patients
of all demographics and serving the greater seacoast area.
OFFICE HOURS
Monday
7:00am - 6:00pm
Tuesday
7:00am - 6:00pm
Wednesday
7:00am - 6:00pm
Thursday
7:00am - 6:00pm
Friday
7:00am - 4:00pm
Saturday & Sunday
Closed
Middleton Chiropractic at Barrington
9 Colonial Way Suite A
Barrington, NH 03825
