Gateway Chiropractic’s Core Values
Drive – We are the ship that never stops. We remove obstacles to create possibilities.
Smart – Our systems are layered in common sense – intelligently crafted and methodically tested.
Fun – Joy is a palpable emotion. Fun is the momentum of our growth.
Freedom – We have the true freedom to grow, to learn, to adapt, and to earn success.
Wealth – Through wealth of knowledge and reinvestment, we provide those in our care the richest experience available.
Meet Our Chiropractic Doctors

Dr. Joseph Sas, DC and Owner
Dr. Sas is a top-rated chiropractor who has been serving St. Louis patients for more than a decade. He graduated from Logan University and is constantly updating his certifications and evaluating treatment techniques that can benefit our patients. Dr. Sas is passionate about providing the best healing services possible to all our patients.

Dr. Grant Nelson, DC
Also a Logan University graduate and an excellent St. Louis chiropractor, Dr. Nelson came to chiropractic care from a very personal experience with a lower back injury he sustained during his military service. The miraculous pain relief that gave him his life back caused him to passionately pursue his chiropractic studies and now we are honored to have him work with us.
Meet Our Chiropractic Support Staff

Brittany Schmitz – Front Desk Coordinator
I was born and raised in Saint Louis and began working at Gateway Chiropractic in April of 2021. Prior to that I worked full time as a server at a steakhouse and part time as a hair stylist. I have a strong passion for animals, especially dogs, and have an adopted little 5-year-old Pitbull named Arya. She is the center of my universe.
I love arts and crafting. My hobbies include anything from Quilling to refurbishing furniture. Some of the things that make me smile are, outdoor activities such as hiking and taking Arya on park adventures. I enjoy traveling and spending time with family and friends.
Tori Connell – Marketing and Outreach
Although I only joined Gateway Chiropractic in July of 2020, it has quickly become home! I am originally from Marion, Illinois and graduated from SIU Carbondale with a Bachelor of Science in Marketing. Coming from a small town, I am very passionate about connecting locally owned businesses to the people in their community. One of the best parts about my role is being able to build strong relationships with other locally owned businesses so we can support each other and serve the community even better!
When I’m not in the office you can find me at the park with my precious pup, Izzy, or spending time outdoors with friends and family. I also enjoy yoga and watch way too many serial killer documentaries.


Lauren Manning – Student Doctor
I am originally from Grand Rapids, Michigan and currently I am completing my preceptorship as a chiropractic student at Logan University. In addition to my doctorate, I will also be graduating with my masters sport science this December. During my undergrad years at Michigan State, I also played college softball. Fitness plays a big role in my life and I enjoy indoor cycling and weightlifting.
My husband Ryan and I have been married for four years now and we have to chihuahuas, Eli and Tuck. For only weighing a combined 10lbs they are are a handful!
I was drawn to chiropractic for many reasons. I love helping those in need not only recover from injury or discomfort but improve their overall health in the process.
Maddie Streb – Chiropractic Assistant
Born and raised in Saint Louis and Mizzou Made, I am a recent graduate from the University of Missouri with a Bachelor in Health Science and a minor in Psychology! I am so excited for this opportunity to work as an assistant and experience clinic life at Gateway Chiropractic before beginning my own journey at Logan University in the fall.

Giving Back
We believe that truly helping others in health and wellness means taking it beyond the walls of our office. In 2021, we sponsored appreciation events for first responders, several healthcare facilities, and for over a dozen local schools. We have also had the opportunity to help countless small businesses better meet the health needs of their staff during such a critical time.
We are committed to serving our community the best way we know how, by improving lives through better health! If there is a way we can support your school or business please contact us today.