Welcome to Core Performance Chiropractic
Dr. Andrew St. Coeur has been serving Port Huron and the Blue Water Area with a style of chiropractic care that goes beyond pain management. Core Performance is built around movement: understanding it, restoring it, and improving it. Whether you're dealing with back pain, a sports injury, or something that's been bothering you for years, you'll leave with a clear plan, not just an adjustment.
A Different Kind of Chiropractic Care
Dr. St. Coeur's background in kinesiology and exercise science from Michigan State sets Core Performance apart from a typical chiropractic practice. Most chiropractors treat symptoms. Dr. St. Coeur treats movement patterns, finding the root cause so results actually last.
- McKenzie Method certified (Parts A–D): A research-backed approach to diagnosing and treating spine and extremity pain that puts patients in control of their own recovery.
- SFMA Level I certified: Selective Functional Movement Assessment allows Dr. St. Coeur to pinpoint movement dysfunctions that standard exams miss entirely.
- Performance Enhancement & Corrective Exercise: Beyond rehab, this is care designed to help athletes and active patients build resilience and move better long-term.
How We Can Help
Conditions We Treat
Whether you're managing a chronic issue or recovering from something recent, Core Performance has treated it.
- Back Pain — From lower back flare-ups to long-standing disc problems.
- Sciatica — Nerve pain, numbness, and radiating symptoms down the leg.
- Neck Pain & Headaches — Cervical dysfunction treated at the source, not just the symptom.
- Sports Injuries — Sprains, strains, and performance-related injuries for athletes of all levels.
- Knee Pain — Biomechanical assessment and chiropractic care for knee pain and function.
- Whiplash & Auto Injuries — Post-collision assessment and rehab to restore range of motion and reduce pain.
Meet Dr. Andrew St. Coeur
Dr. Andrew St. Coeur grew up in the Port Huron area and came back after completing his Doctor of Chiropractic at the National University of Health Sciences — one of the most research-forward chiropractic institutions in the country. His undergraduate background in Kinesiology and Exercise Science from Michigan State shapes everything about how he approaches patient care.
Dr. St. Coeur holds certifications in the McKenzie Method (Parts A–D), SFMA Level I, Performance Enhancement, Corrective Exercise, and Kinesio Taping (Levels I & II). He's a member of the American Chiropractic Association, the Michigan Association of Chiropractic, and the Blue Water Chamber of Commerce.
Serving Port Huron and the Blue Water Area
Located at 401 McMorran Blvd in downtown Port Huron, Core Performance sees patients from across St. Clair County and the surrounding communities — including:
- Port Huron, MI
- Fort Gratiot, MI
- Marysville, MI
- St. Clair, MI
- Marine City, MI
- Kimball Township, MI
- Port Gratiot, MI
Frequently Asked Questions
No referral is needed. You can book directly with Dr. St. Coeur — Michigan allows patients to seek chiropractic care without a physician's order.
Your first appointment includes a thorough health history, postural and movement assessment, and a discussion of your goals. If treatment is appropriate, Dr. St. Coeur will typically begin care at that same visit.
Yes. Same-day appointments are available based on schedule. Core Performance is open Monday, Wednesday, and Friday from 9am–12pm and 2–6pm, and Tuesday mornings 9am–12pm.
Back pain, sciatica, neck pain, headaches, sports injuries, knee pain, whiplash, and more. Dr. St. Coeur also works with athletes looking to improve performance and reduce injury risk, not just patients in pain.
Many insurance plans cover chiropractic care. Contact the clinic directly and Dr. St. Coeur's team can help you understand your coverage before your first visit.
Ready to Feel the Difference?
Dr. St. Coeur brings MSU kinesiology training, McKenzie certification, and a hands-on approach to every appointment. Same-day availability. Downtown Port Huron location.
