Gateways Chiropractic
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All of our chiropractors are Internal Health Specialists and are certified in chiropractic acupuncture. They’ve been trained in anatomy, physiology, and holistic nutrition. They understand that no two bodies are alike and will work with you find the right care for your body.


Mackenzie McNamara, DC

Pediatric and Prenatal Chiropractic
Functional Health Protocols
Mind-Body Acupuncture


  • Chiropractic Pediatrics, Logan University, College of Chiropractic, 2017
  • Webster Technique Certified, International Chiropractic Pediatric Association, 2016
  • Internal Health Specialist, Food Enzyme Institute, 2013
  • Fellow, Acupuncture Society of America, 2012


  • Doctor of Chiropractic, Logan College of Chiropractic (Logan University), 2013
  • Bachelor of Science in Life Sciences, Logan University, 2011
  • Bachelor of Arts in Biology, University of Missouri-Columbia, 2009


Hi, I’m Dr. Mackenzie. I am a chiropractor, wife, mama, and passionate natural health enthusiast. I was born and raised in St. Louis and love living and practicing in the area. Being in the natural healing arts is not just my career, it’s my calling. The human body is truly incredible – learning to trust my body and its innate healing abilities has led me on a path to transform my own health. I was so empowered by what I learned in Chiropractic School and acupuncture courses that I turned my life upside-down, or rather, right-side-up. I changed my thinking, changed my diet, and sought care from my mentors in chiropractic and acupuncture. I was able to lose 50 pounds, get out of pain, and become completely medication-free for the first time in a decade. I felt vibrantly healthy and full of energy. I got my life back. And now I am on fire to help others do the same. You CAN make changes – You CAN better yourself – You CAN re-create a happy, healthy life. Start slow or jump in all at once. I am here to help!



David Patrick McNamara, MS, DC

Endo-Nasal Technique
Sports Performance & Rehab


  • Internal Health Specialist, Food Enzyme Institute, 2013
  • Fellow, Acupuncture Society of America, 2012




  • Doctor of Chiropractic, Logan College of Chiropractic (Logan University), 2013
  • Master of Science in Sports Science and Rehabilitation, 2014
  • Bachelor of Science in Life Sciences, Logan University, 2011
  • Bachelor of Science in Biology, New Mexico State University, 2008


Dr. David Patrick McNamara ("Dr. Patrick") is a chiropractor, husband, dad, and avid tennis player. Dr. Patrick grew up in Las Cruces, New Mexico and moved to St. Louis to attend chiropractic school at Logan College of Chiropractic. Dr. Patrick is passionate about natural health and healing and focuses on family wellness care, endo-nasal technique, and sports performance and rehabilitation.


What should I expect?

At Gateways Chiropractic, the doctors will complete a thorough consultation and evaluation which will last 30-45 minutes depending on the complexity of your case and your chosen route of care (chiropractic care, acupuncture, nutritional counseling and target enzyme nutrition, or a combination of the three).

If care is provided on your first visit, this may take an additional 15-45 minutes depending on your body’s needs.

Please download and complete the appropriate paperwork prior to your first visit.

If you have any questions, give us a call at (636) 940-2226.

Thank you!

You adjust babies?

Absolutely. Pediatric evaluations and adjustments are not the same as a traditional adult chiropractic adjustments. Chiropractic care is safe, gentle, and effective for babies and children. It is an integral part of care for a developing brain (nervous system) and body. From the strain of the birth process to tumbles of toddler-hood, to wresting with siblings, sports, carrying back-packs, reading, prolonged seated posture reading and studying... Children absolutely NEED to have their structure and nervous system assessed and addressed by a qualified chiropractor.



We accept cash, check, credit/debit, and some HSA cards.

Payment is due at the time of service.

To avoid the full visit fee, please call our office with any cancellation request with at least 24 hours notice.

What about insurance?

Gateways Chiropractic does not accept insurance and does not file insurance paperwork on the patient’s behalf. We are happy to provide a detailed receipt of care, including diagnosis and procedure codes, that can be submitted to an insurance carrier for possible reimbursement (we cannot assure that services will be reimbursed).



Healing is an inside job. Credit goes to the amazing healing capabilities within the patient themselves. Chiropractic care and the other healing arts practiced at Gateways Chiropractic remove stress from the body (and nourish its tissues with healthy neurological input/movement, energy, nutrition, herbs, etc.) so that each person can begin creating health and expressing more life. 


I brought my daughter to see Dr. Mackenzie after getting results from a stool analysis showing candida overgrowth and being unhappy with the recommendation I had been given from another healthcare practitioner. Dr. Mackenzie suggested we start my daughter on a digestive enzyme (Pan) and enzymes and probiotics (SmI) to kill off the candida. We followed the protocol for a month while avoiding gluten, dairy, and sugar. Within that time frame my 2 year old started counting to 10, singing her ABC’s, and reading books to herself without any prompting from us. We also noticed that she had started to become much more confident in herself and less fearful of things that she had been refusing to do on her own before, such as slides and steps. It was like we had a different child.When we went in for a follow-up we weighed my daughter because one of the other concerns I had was that she had not gained weight in 6 months and had fallen off the chart. Within the one month she was on the supplements that Dr. Mackenzie recommended she gained 3 lbs! I am so thankful that we found Dr. Mackenzie and that we were actually finally able to see improvement in my daughter. I would highly recommend her to anyone who feels they are stuck in their health journey or is just ready to get started with a healthy lifestyle.

Alyssa H.


Dr. Mackenzie has been a true blessing to my family. My daughter who was under the age of two at the time was not feeling well. She was not having wet diapers and I took her to the ER. They couldn’t figure out what was going on. Dr. Mackenzie got us in quickly to get my daughter adjusted. I was nervous because I had never had my child adjusted before. Before we left she had a very wet diaper! She also started sleeping better! We see Dr. Mackenzie on a regular basis for continued wellness visits. Dr. Mackenzie is very knowledgeable when it comes to children. My son, who is three years old, has sensory processing disorder and autism. He loves seeing Dr. Mackenzie when his brain “feels crazy”. He says she helps him feel better and it is seen in his behaviors! We have fewer melt downs and he performs better at therapy!

Amanda H.


Before taking digestive enzymes, I had not had a solid BM in over 3 months (since the birth of my daughter via C-section). I was having diarrhea multiple times a day for over 3 months! The enzymes were a complete game changer for me. I noticed improvement in my GI system within 3 days! I highly recommend using Dr. McNamara’s tests to determine what enzymes you’re lacking to get a complete picture of your GI health!


I found Dr. Patrick McNamara in the spring of 2014 when I moved to the St. Charles, MO being new to the area due to a work relocation and not knowing any chiropractors in town.  I was pleasantly surprised by his professionalism, kind demeanor and willingness to take the time necessary to answer my questions and help educate me in the process. I would occasionally overdo it as a weekend warrior with golf, lifting weights or traveling and he would always get me back on track in no time! He was always accessible, quick to return a call and even accommodated me a couple times on a Saturday with short notice due to my busy work schedule. His office is easily accessible and I found he and Mackenzie to have the highest standards of care and professionalism in running their practice.  It was a pleasure to be treated by these fine doctors and I would highly recommend anyone in need of chiropractic care (even acupuncture) to give them a try, you won’t be disappointed.

Dennis S.