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 Dr. Gray and Dr. Peitrobon to review and discuss patient cases with Neurosurgeons, Orthopedic Surgeons, Physiatrists, and Physical Therapists.
Dr. Samuel Gray
Chiropractor
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. Derrik Peitrobon
Chiropractor
Meet Dr. Derrik Pietrobon, a dedicated chiropractor who has served communities in Chicago, Colorado Springs, and now proudly practices in Waterford, Michigan. A graduate of Palmer College of Chiropractic, Dr. Pietrobon has cared for patients from all walks of life — from active athletes to busy families — helping them move, heal, and thrive through personalized chiropractic care.
With a patient-centered approach, Dr. Pietrobon takes time to understand each person’s unique needs and goals, providing holistic care tailored to the individual. Specializing in neurological, structural, and biomechanical imbalances, he is deeply committed to delivering precise, thoughtful care that helps patients and their families live active, healthy, and vibrant lives.
Outside the clinic, Dr. Pietrobon enjoys running, biking, fishing, and exploring all that Michigan has to offer with his wife. He is excited to bring his expertise to Summit Regenerative Health and to play an active role in improving the quality of life for his patients.
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
Kari
Outside of work, Kari enjoys spending time with her husband, exploring Michigan, fishing for salmon and steelhead, traveling, and immersing herself in a good suspense novel.
Kylie
Kylie is the Assistant Office Manager at Summit Regenerative Health and is passionate about helping others. A longtime patient of Dr. Grays, she enjoys working alongside him and supporting patients on their wellness journey. Kylie looks forward to completing her education and pursuing a career in the medical field.
Savanna
Savanna is a Chiropractic Assistant at Summit Regenerative Health. She graduated from Oakland University in 2022 with a bachelor’s degree in Health Sciences, concentrating on Holistic Health. She is currently continuing her education at Oakland University, majoring in Pre-Nursing.
Savanna enjoys working with patients and is always eager to learn something new. In her free time, she loves spending time with her fiancé, their dog Violet, and her family. Her favorite hobbies include gardening and reading thriller novels.
She is thrilled to be part of the Summit Regenerative Health family!
Kalynn
Kalynn is also pursuing her degree in Psychology at Central Michigan University, with the goal of becoming a licensed therapist. Her long-term vision is rooted in one clear purpose: to support others in feeling seen, heard, and cared for.
Known for her welcoming energy and compassionate nature, Kalynn has a natural ability to make people feel comfortable and validated. Whether she’s assisting in the healing process in the office or preparing for her future in mental health care, Kalynn brings warmth, empathy, and a true heart for service to everything she does.
Julia
Lindsey
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.
Hadel
Katey
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.
Robin
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!
Mo
Mo (she/they) graduated from Irene’s Myomassology Institute in 2019 and became a Registered Yoga Teacher in 2023. Her background includes a bachelor’s degree in Psychology and administrative work in multiple industries. Mo specializes in customized therapeutic massage and deep tissue, using a wide variety of modalities and knowledge to tailor her approach to each individual’s needs and preferences. Using a trauma-informed and holistic approach, she strives to make every massage relaxing and comforting to the mind as well as the body. Mo also enjoys offering self-care tips, tools, and resources that clients may use at home to improve their quality of life and overall well-being. In their free time, Mo loves to read, listen to podcasts, play board and video games, and spend time with their husband and three cats.
Zoe
Zoe’s practice incorporates a variety of therapeutic modalities tailored to each individual, including deep tissue work, Thai massage techniques, cupping, and the soothing contrast of hot and cold stone therapy. Whether you’re recovering from injury, managing chronic pain, or simply seeking a space to unwind and reset, her goal is to create a session that supports your unique wellness journey.
With a calm presence and intuitive touch, I strive to make every treatment a deeply restorative experience—helping your body release, realign, and renew.
Alexandra
Alexandra provides customized sessions that combine anatomical knowledge and intuitive awareness. Her experience includes Swedish massage, deep tissue techniques, fascial therapy, and energy-based methods, which she uses to address pain, chronic tension, and stress-related conditions. She is passionate about supporting clients’ overall well-being while creating a relaxing, restorative experience in every session.
Outside of practice, Alexandra continues to expand her education and enjoy holistic health, nature, and reading.