Neuro Chiropractic Center

At the Insight Neuro Chiropractic Center, you get so much more than a quick treatment. You get over 20 years of clinical experience and the expertise of a board-certified functional neurology practitioner. Our doctors invest the time to carefully diagnose the cause of your pain and explain to you how to best alleviate that pain.

There are many causes of back pain, neck pain, headaches, and numbness and tingling in the arms and legs. Many of these causes are mechanical and can be helped significantly by chiropractic care. Other causes of pain include poor nutrition, stress, lifestyle, effects from medication, and serious disease.

Because Insight features a large, multidisciplinary team, you have more options and dedicated physicians working for you than at other chiropractic offices. Our doctors work diligently to make sure you have and get all the help you need.

neuro chiropractic center services

Auto Accident Injury Care

Dr. Denning and Dr. Sullivant specialize in the diagnosis, care, and management of auto accident-related injuries. Spinal disc issues, headaches, whiplash, and debilitating pain are just some of the potential conditions to arise from an auto-related accident. Our physicians are experienced in the management of mild to severe conditions, including herniated/bulging discs and traumatic brain injuries. Our gentle approach to care comforts and relieves many patients’ pain while correcting the underlying cause of these symptoms.

Traditional Chiropractic Care

Chiropractic care is based on the inherent recuperative power of the body to heal itself without the use of drugs and surgery. The practice focuses on the relationship between structure (spine) and function (the nervous system) and how that relationship affects the preservation and restoration of health.

Many people assume that chiropractors only treat neck and back issues because chiropractic adjustments are performed directly on the spine. While the elimination of neck and back pain is certainly one focus, chiropractors treat many other conditions. The spinal column encases the nervous system, and the nervous system controls the numerous intricate functions of the human body. When the spine is misaligned, it will create disease within the nervous system, altering the way the human body is designed to function.

Chiropractic adjustments, along with other therapies and techniques, are combined in our office to create a whole-body approach. This may mean a preventative approach to health and wellness or recovery from traumatic injuries to the spine and extremities.

Our clinic offers the following chiropractic therapy services:

  • Therapeutic massage
  • Mechanical/therapeutic traction
  • Spinal decompression therapy
  • Myofascial release
  • Nerve flossing
  • Diversified manipulation
  • Drop-assisted manipulation
  • Ergonomics Counseling
  • Spinal rehabilitative protocols
  • Post-Surgical Care
Nutritional Analysis & Counseling

For many people, food and diet are very problematic. Instead of being a source of nourishment, food has become an area of conflict and confusion – endless weight loss dramas, eating disorders, cravings, addictions, body image obsessions, and never-ending searches for “the best” nutritional system.


Dr. Denning carefully evaluates aspects of our patients’ lifestyles and current diet in order to put together a comprehensive nutritional plan that is individualized to each person. No two people are alike; therefore no set of dietary recommendations will be the same. Dr. Denning uses science-based research to detail a nutrition program that includes anti-inflammatory components to assist in the reduction of your pain.

Pregnancy/Pediatric Chiropractic

During pregnancy, body changes occur rapidly to accommodate your baby’s growth. Chiropractic care can help your body readily adapt to these changes by ensuring your body is well connected through a fully functioning, unobstructed nervous system. Additionally, a properly aligned spine and pelvis can help to reduce pain and discomfort during all stages of pregnancy.


Postpartum, mothers are understandably focused on the health and comfort of their newborn child. It is important to remember the importance of the health and recovery of the mother during this period, as a healthy mother is able to more effectively meet the needs of her child. As the ligaments and tissue that loosened during pregnancy begin to slowly heal and tighten, postpartum women are likely to experience discomfort and pain related to instability of those areas. Couple this with the repetitive actions of breastfeeding, carrying your new baby, hauling diaper bags and car seats, etc.., and it is no surprise why most new mothers experience neck and back pain while adapting to life’s new tasks.

We take pride in playing an important role in your pregnancy health care!

Therapeutic Massage

Our therapists at the Insight Neuro Chiropractic Center are versatile in caring for the many different needs of our patients. Our therapists coordinate with our physicians to review your diagnosis, treatment, and care plan. This ensures that they will be able to best target your concerns during treatment. Our therapists have diverse experience and can perform many different styles of massage to suit your needs.

  • Deep tissue massage
  • Swedish massage
  • Sports massage
  • Medical/therapeutic massage
  • Trigger point therapy
  • Soft tissue massage/auto accident trauma
Rehabilitative Exercise Program

Therapeutic exercises for the spine and extremities are an essential part of the rehabilitative process following an injury. Our physicians designate therapeutic exercises depending on what each patient needs. The purpose of therapeutic exercises, when guided by our chiropractors, is to promote strengthening and stability following an injury or trauma to any area. This strengthening, in turn, supports the corrective care you are receiving during the spinal adjustment.


Therapeutic exercises and chiropractic care go hand in hand and can help speed you on your road to recovery when performed in conjunction.

Spinal Decompression Therapy

Nonsurgical spinal decompression is a type of motorized traction that may help relieve back pain. Spinal decompression works by gently stretching the spine. That changes the force and position of the spine. This change takes pressure off the spinal discs, which are gel-like cushions between the bones in your spine, by creating negative pressure in the disc. As a result, bulging or herniated disks may retract, taking pressure off nerves and other structures in your spine. This, in turn, helps promote movement of water, oxygen, and nutrient-rich fluids into the disks so they can heal.


Spinal decompression is not for everyone, but our physicians utilize this therapy in candidates with severe spinal conditions such as:

  • Bulging discs/pinched nerve
  • Disc herniation
  • Sciatica
  • Degenerative discs
  • Whiplash
  • Radicular pain
sports injury management capacity

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meet our neuro chiropractic team


Rachel A. Sullivant

DC, Cert. MDT, FACMUAP | Chiropractor

David Swain, DC


Ashley Fox


Rachel A. Sullivant

Dr. Rachel Sullivant is a chiropractor at Insight Neuro Chiropractic Center. Dr. Sullivant began her journey in the healthcare field in high school. Her first job was as an assistant in a Flint chiropractic practice where she developed a passion for people and helping her community. She attended the University of Michigan in Ann Arbor, where she worked on a longitudinal health study at Michigan’s School of Public Health. She also spent two years working with the SWAN Study (Study of Women Across the Nation), which provides research and data on aging in women and the health implications they may face.

After graduating from Michigan with a Bachelor of Science in Neuroscience, she began her post-graduate studies in the Doctor of Chiropractic program at Life Chiropractic College West in the Bay Area of California. She graduated Summa Cum Laude in 2016 and passed her diplomate exam through the American Chiropractic Neurology Board in 2018 after completing 300 hours of post-doctoral studies through the Carrick Institute in Clinical Neurology.

Since graduating, Dr. Sullivant has worked to grow the chiropractic department at Insight. She specializes in motor vehicle accidents, post-surgical patients, and migraines. Her office recently partnered with the Flint Firebirds, a professional hockey team in the Ontario Hockey League, providing spinal care and post-concussive therapy to the players and coaches.

DC, Cert. MDT, FACMUAP | Chiropractor

David Swain, DC

Dr. David Swain is a board-certified chiropractic physician at Insight Neuro Chiropractic Center. He has spent his career in the interdisciplinary domain, practicing alongside providers specializing in a variety of disciplines, including orthopedics, pain management, and sports medicine.

Dr. Swain received his undergraduate degree from WMU in Kalamazoo, MI and his graduate degree at NUHS in Chicago, IL. While at NUHS, he was student president of the sports medicine and rehabilitation program and vice president of the student-run Motion Palpation Institute. Dr. Swain is fellowship trained in manipulation under anesthesia. He also has training in Cox flexion distraction and manual soft tissue techniques, as well as evaluation and management of musculoskeletal disorders using the McKenzie Method of Mechanical Diagnosis and Therapy.

Born and raised in Metro Detroit, Dr. Swain is happy to be practicing in Michigan. When he’s not working, you can find him spending time with his wife and two children, playing golf, and fishing with friends and family.


Ashley Fox

Dr. Ashley Fox is a chiropractor at Insight Neuro Chiropractic Center. Born and raised just north of Hockeytown, in Port Huron, Michigan, Dr. Fox developed a love and passion for hockey and has dedicated her career to serving those who love and play the sport. Dr. Fox graduated from Hope College, where she was on the varsity cheer and track & field team, with a Bachelor of Science degree in exercise science & psychology with an emphasis in athletic training. She then worked with the Detroit Lions and Detroit Tigers for a season before becoming the head athletic trainer of the Port Huron Prowlers for four years.

Wanting to further develop her skills in helping and treating these athletes, Dr. Fox obtained her Master of Science in sports science and rehabilitation, and Doctorate of Chiropractic from Logan University. While at Logan University, she also interned as a strength and conditioning coach under retired Boston Bruins player and current owner and strength conditioning coach at RIPT Hockey, Jeff LoVecchio. Here she was able to learn and assist in the offseason, preseason, and in season training of hockey players at the U18 tier 1 AAA, D1, and NHL levels.

After graduation, Dr. Fox knew there was no better community to serve than Hockeytown itself in Metro Detroit, where she specializes in treating all athletes from the weekend warrior to professional athletes, helping them with rehabilitation, injury prevention, and achieving optimal performance levels.

Dr. Fox is excited to be part of the team at Insight, using her skills developed as an athletic trainer and chiropractic sports physician to serve all those looking to improve their overall function and game. Dr. Fox emphasizes treating soft tissue needs with ART, dry needling, cupping, IASTM, kinesio, and athletic taping. She also specializes in addressing muscular imbalances with individualized rehabilitation programs in combination with full spine and extremity adjustments.


To schedule an appointment, contact our office at (810) 275-9366 or fill out the form below.


4800 S. Saginaw St., Suite 1820 Flint, MI 48507

(810) 275-9366

(810) 213-0240


Monday, Wednesday, and Thursday
9 a.m. to 5 p.m.

Tuesday and Friday
9 a.m. to 12 p.m.


21230 Dequindre Road Warren, MI 48091

(810) 275-9152

(810) 213-0228


Monday, Wednesday, and Thursday
9 a.m. to 5 p.m.

Tuesday and Friday
9 a.m. to 12 p.m.

4800 S. Saginaw St. Flint, MI 48507

21230 Dequindre Road Warren, MI 48091