Meet Our Team
Our team combines chiropractic, functional health, and supportive front desk care to make your experience seamless from the moment you walk in. Meet the people who help keep your visits smooth, stress free, and focused on your health.
Dr Justin Cosgrove, DC, MS
Dr. Justin Cosgrove is a Warrenton native, U.S. Army veteran, and chiropractor with advanced training in sports medicine and functional health. He brings an evidence based, movement focused approach to care, helping patients improve performance, recover from injury, and support long term health. Outside the clinic, he enjoys strength training, archery, trail running, and time with his family.
Dr Sabriah Postma, DC
Dr. Postma brings a thoughtful, patient centered approach to chiropractic care, blending adjustments, acupuncture, soft tissue work, and exercise therapy. With a background in exercise science and experience working with athletes and active adults, she helps patients of all ages stay mobile and confident in their bodies.
a quick glimpse of our Warrenton office
Meet our team
Click to learn about each of our wonderful team members whom our office could not function without!
Meghan,
RN, BC-FMP
Alexa
Office Manager
Bethany
Chiropractic Assistant
Sara
Chiropractic Assistant
Alexa, Office Manager
Alexa has been part of the Steadfast team for about a year and brings a strong passion for healthcare to the clinic. Before joining our office, she worked as a veterinary technician, giving her a well-rounded background in patient care. Outside of work, Alexa enjoys traveling, spending time with her husband Bobby, their baby girl, and their cat Obadiah. She is active in missions and volunteering through her church and loves being outdoors, riding horses, and yes, even working with spreadsheets.
Bethany, CA
Bethany has been working at our office for two and a half years. She, along with her husband Dean and their three children, moved from Indianapolis to Warrenton MO 7 years ago. She loves health & fitness, being outdoors, and traveling with family and friends. With health & fitness being an important part of her life, she really enjoys working at Steadfast Spine & Sport & learning each day how God can use functional medicine to help heal our bodies.
Sara, CA
Sara joined the Steadfast team in 2025 and has loved getting to know each of our patients. She brings a background in medical billing and coding, with a strong focus on accuracy, organization, and teamwork. Outside of the clinic, Sara enjoys spending time with her family, especially fishing and relaxing at the lake. At home, she stays busy with three cats and one dog who keep life fun and full.