Meet the Team

We’ll Exceed Your Expectations!

The philosophy at Summit Regenerative Health is and always has been “Whatever is best for the patient”.

We always have the best interests of our patients in mind. If needed, we work with and refer to other medical specialists and diagnostic facilities to ensure we are doing everything we can for each individual patient. If your case is within our scope of practice we will gladly accept you as a patient and help you determine an effective protocol. If your symptoms suggest you may need further testing or procedures we will make the appropriate referral to make sure you have the right care.

It is a common practice of both Dr. Gray and Dr. Kushner to review and discuss patient cases with Neurosurgeons, Orthopedic Surgeons, Physiatrists, and Physical Therapists.

Dr. Samuel Gray


Dr. Samuel Gray has been providing Waterford and the surrounding communities with the highest standard of chiropractic care since 1988. During that time, he has worked with thousands of patients and taken a special interest in sports and athletic injuries, disc treatments and family wellness care.

Dr. Gray is a member of the Michigan Association of Chiropractors as well as the American Chiropractic Association. He was first introduced to the power of chiropractic care at age eleven when he witnessed a Chiropractor help his mother avoid a spinal surgical procedure and realized it was his mission in life to help people with a natural, drug-free approach.

“I love helping people achieve their full potential. Wellness has three pillars; how you think, how you move and what you eat,” says Dr. Gray. “Consider me your health director, I sincerely have your best interests in mind.”

Dr. Gray believes chiropractic care and a more traditional medical approach go hand in hand. He has an impeccable reputation in the medical community and an extensive network of practitioners across many fields who he refers to and who refer to him. Many medical doctors in Waterford and surrounding areas not only refer to Gray but also utilize his services personally.

“My philosophy is quite simple actually,” says Dr. Gray. “I treat everyone as an individual. I am dedicated to practicing the right way. By that, I mean doing what is right for the patient. We have a success rate of more than 92% with individuals who seek out our care, approach and opinion. 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.”

In addition to delivering the highest quality Chiropractic care, Dr. Gray is also a member of the Oakland County Sheriff’s advisory committee and sponsors and contributes to numerous local charities and youth sports teams. He also, along with a business partner, brought STRETCHZONE, a practitioner-assisted stretching service, to metro Detroit and currently oversees three locations.

When not helping people improve their physical health, Dr. Gray is the lead singer in The Foster Brooks Band, a local rock and roll cover band. He also enjoys tennis, travel and makes staying fit and family time top priorities. Dr. Gray has been happily married for 32 years and he and his wife have been blessed with three daughters and a son-in-law.

Dr. Hollie Kushner


Dr. Hollie Kushner, D.C. is known as “Dr. Hollie” by her patients. She has been providing chiropractic care to families in the greater Orlando, Florida area since 2021. During that time, she has worked with thousands of patients and taken a special interest in caring for patients who have headaches and neck pain, low back pain, along with pregnancy discomfort. She also uses her advanced knowledge to skillfully care for those patients with osteoporosis and osteopenia. With her background in martial arts, she is familiar with treating the injuries that occur with those activities, such as shoulder, ankle and hip pain resulting from the sport.

Dr. Hollie is a member of the Michigan Association of Chiropractors as well as the Florida Chiropractic Physicians Association. She was first introduced to the power of chiropractic care at age twenty-two when she worked at a chiropractic office in Michigan and she herself witnessed the power of Chiropractic which helped resolve her chronic upper back pain.

Her comprehensive approach incorporates a range of techniques, encompassing drop and instrument adjusting, as well as traditional chiropractic methodologies. “Every patient is an individual and requires their own unique care plan. I carefully analyze each patient’s needs and create a custom tailored treatment plan for them.” says Dr. Hollie.

“I enjoy hearing people’s amazement when they realize they don’t have to live with their pain. Chiropractic care keeps us moving and living life how we want to live it, on our own terms. Real health starts from within; your diet and your mindset, along with your activity levels, all play an important part of your overall well being.” says Dr. Hollie. “I am your partner in health and together we can achieve great things.”

Beyond her commitment to chiropractic care, Dr. Hollie enjoys various personal pursuits. A practitioner of martial arts, she views this discipline not merely as a pastime but as an integral aspect of her commitment to personal well-being and discipline. Likewise, her appreciation for an active lifestyle extends to the great outdoors, where she finds solace and inspiration through hiking. Additionally, Dr. Hollie possesses a discerning eye for antiquing, cherishing the timeless narratives embedded in vintage artifacts.

Leonard Weinberger, MSN-FNP

Family Nurse Practitioner

Meet Leonard Weinberger, MSN-FNP, a dedicated and accomplished Nurse Practitioner with a strong background in orthopedic medicine, joint injections, and holistic healthcare. Leonard has been a practicing Nurse Practitioner since 2018 and strives to make an impact on the numerous patients he has treated through compassionate care and an individualized approach to healthcare.

Leonard’s passion for healthcare and helping others led to his specialization in interventional pain management and orthopedic medicine. This specialization allows him to diagnose, treat, and manage a wide range of conditions affecting the musculoskeletal system. He is skilled in performing joint and muscular injections and peripheral nerve block procedures, providing immediate pain relief and long-term healing benefits for his patients.

In addition to his clinical expertise, Leonard is a strong advocate for holistic healthcare practices. He understands the importance of addressing the whole person, rather than just treating symptoms. By staying committed to the latest research, techniques, and advancements in the field, and by incorporating a holistic approach, Leonard empowers his patients to take an active role in their health and well-being, leading to improved quality of life and overall satisfaction.


Our Support Staff




Kylie is a proud member of the Summit Regenerative Health team and enjoys helping others. Kylie has been a patient of Dr. Grays since she was little and enjoys working with him. She looks forward to finishing school and working in the medical field.

Message Therapist Julie Summit Chiropractic - COVID


Julia is a Licensed Massage Therapist that specializes in Integrative and Relaxation Massage, Cupping, Therapeutic Stretching and Reiki in order to target joint and muscle pain, help improve circulation and relieve tension and stress.
Lindsey Summit Chiropractic - COVID


Lindsey is a licensed massage therapist who graduated from Irene’s Myomassology Institute in Southfield in 2017. She started with Summit Regenerative Health right after graduation. Often using a combination of therapeutic and relaxing techniques in each session, she tries to promote wellness in both body and mind. She also offers hot stone massage, prenatal massage, CBD massage and deep tissue massage.

Message Therapist Hadel Summit Chiropractic - COVID


Hadel has been a massage therapist since 2017. She has an associate’s degree from Schoolcraft College and years of chiropractic office experience. She performs deep tissue, trigger point, myofascial release, muscle energy, Swedish, and prenatal massage. She excels in developing a plan to help reach a patient’s goals!
Lindsey Summit Chiropractic - COVID


Katey graduated from Irene’s Myomassology in 2016. Returning to Summit Regenerative Health after practicing massage in Marquette, MI the last 5 years. She specialized in deep tissue, sports massage, active range of motion, cupping, and prenatal techniques. If she isn’t at Summit Regenerative Health you can find Katey near a lake or hiking in the woods with her dogs.

Lindsey Summit Chiropractic - COVID


Robin Graduated from Irene’s Myomassology Institute in 2016. Her goal is to help provide pain relief, increase range of motion and relaxation for her clients. She specializes in Therapeutic Stretches, Deep Tissue Massage, Trigger Point Therapy, Myofascial Release, Sports Massage and Swedish Massage.

In Robin’s free time she loves being outdoors, gardening, spending time and laughing with her family and doing pottery!