Our Doctors

Dr. Sam Gray and Dr. Katie Zimmerman have a combined 30+ years of experience to share with you and make sure you are receiving the right treatment for your condition. Working with families, amateur and professional athletes, and weekend warriors has made Summit Chiropractic a facility that is trusted by people from all walks of life, with many types of health concerns.

Dr. Samuel Gray


Dr. Samuel Gray has been serving the Waterford community as a Chiropractor since 1988. During that time, he has taken a special interest in Sports and Athletic injuries and family wellness care. Dr. Gray has an impeccable reputation in the medical community and many medical doctors in Waterford and surrounding communities not only refer to Gray, but utilize his services personally. He is a member of the Michigan Association of Chiropractors as well as the American Chiropractic Association. Dr. Gray is part of a family of Chiropractors. You could say Chiropractic runs in the family. From the age of eleven when he witnessed a Chiropractor help his mother avoid a spinal surgical procedure, a young Gray realized it was his mission in life to help people. Over the last 24 years, he has worked with thousands of patients. ” My philosophy is quite simple actually. Most people who walk into my office, I am able to help. I treat everyone as an individual. We are dedicated to practicing the right way. By that I mean doing what is right for the patient. When I know that a patient would benefit from a different approach, opinion, or further testing, I make sure that we refer them to the right specialist in my network of practitioners.” Dr. Gray sponsors and contributes to numerous local charities and youth sports teams. He also is the Vice President of the Michigan Jewish Sports Foundation as well as the Founder of the Detroit based company BodyPartChart, an anatomy chart supplier to numerous local hospitals and private practices. Dr. Gray has been happily married for 23 years and he and his wife have been blessed with three daughters.

Dr. Katie Zimmerman


Dr. Zimmerman grew up in Novi, Michigan and has been a chiropractor since 2004.  She received her Bachelors degree from Central Michigan University and attended Logan College of Chiropractic in Chesterfield, Missouri. Dr. Zimmerman became interested in chiropractic following an injury while running cross country and track her freshman year of college.  She went to numerous doctors and had various treatments for her back and hip pain with no improvements.  She eventually ended up at a chiropractic office which dramatically reduced her pain and allowed her to be able to function and sleep without pain.  After taking several years off of running she now currently trains and runs half and full marathons. Dr. Zimmerman enjoys helping her patients live a healthier pain free life.  She treats every patient as a unique individual.  Dr. Zimmerman takes a special interest in women’s health issues and sports injuries.  She looks forward to treating and helping families reach and sustain their health goals through chiropractic care.

 It is a common practice of both Dr. Gray and Dr. Zimmerman to review and discuss patient cases with Neurosurgeons, Orthopedic Surgeons, Physiatrists, and Physical Therapists. The philosophy at Summit Chiropractic is and always has been “Whatever is best for the patient”.

Dr. Gray and Dr. Zimmerman utilize Spinal Decompression Therapy which is a noninvasive, very effective treatment for intervertebral discs including Herniated discs, Bulging discs, and Degenerative discs. Cold Laser Therapy is also available and is often used in tandem with other forms of treatment to drastically reduce inflammation of joints, discs, ligaments, and the pain associated with common arthritic conditions.

At Summit Chiropractic you are treated as an individual. Diagnostic studies done on sight consist of digital x-rays, Surface EMG and Thermal Scans. Electric Impulse Adjusting instruments and spinal manipulation are utilized and soft tissue work and stretching are used as well. The comfort and safety of the patient is always the priority. Massage therapy is available onsite, with four highly trained, certified massage therapists.

The doctors and staff at Summit Chiropractic have a genuine concern for your well being and health! Call us today and we can develop a Chiropractic plan specifically for you. Or, if it’s a second opinion you seek out, we are happy to let you know if you are a candidate for any one of the many approaches we have here at the office.

“Our purpose is to educate and empower our patients with relevant information in regards to their health and lifestyle changes that will help them achieve and maintain optimum health.” -Sam Gray DC