Meet Our Chiropractors
Chiropractic care can help you heal and get your life back on track

Dr. Frank Noble
Doctor of Chiropractic | Certified Chiropractic Extremity Practitioner
Education:
Doctor of Chiropractic, 2002 – Life University in Marietta, GA
A 2002 graduate of Life University’s School of Chiropractic, Dr. Frank specializes in chiropractic care for extremities. He was first introduced to chiropractic in his early 20s following an injury to his lower back. Not only did chiropractic care heal his back pain — it also eliminated his childhood allergies!
The miraculous healing powers of chiropractic inspired Dr. Frank to enter Life University and study chiropractic medicine. Five years after graduation, he completed the Certified Chiropractic Extremity Practitioner (CCEP) series.
Dr. Frank, his wife, and their four children live in the Acworth area. He joined the team at Ribley Family Chiropractic in 2012 and looks forward to serving people in Woodstock and surrounding areas for many years to come.

Dr. Jack Dahlhauser
Doctor of Chiropractic
Education:
Iowa State University
Palmer College of Chiropractic
Life University
Dr. Jack Dahlhauser has been practicing chiropractic since 1975. Having been a chiropractor for almost 50 years, and being a professor at Life University from 1993-2005, he has shared his expertise and knowledge with thousands of students and colleagues. Dr. Jack also Provided care to Olympic athletes from various countries during the 1996 Atlanta Olympics.
He performed assistance and organized research for approximately one year on behalf of WHO (World Health Organization) low back study at Life University Doctors Clinic. Dr. Jack continues to educate the patients at Ribley Family Chiropractic about the connection between the alignment of the spine and our quality of life.

Dr. Jim Ribley
Doctor of Chiropractic
Education:
Life University, Marietta, GA – Doctor of Chiropractic 1993
Dr. Jim Ribley comes from a family of chiropractors. His father, Dr. Chuck “River” Ribley, was a founding member of Life University and an inspiration to many of those who came after him. Dr. Jim’s brothers, Dr. Dan and Dr. Larry, are also a part of the family chiropractic dynasty. After graduation, Dr. Jim practiced in Michigan from 1994-2017. He then moved closer to family in Georgia and has been practicing here ever since.
In his spare time, Dr. Jim likes to spend time with family, hike, and watch basketball. He was an exceptional athlete growing up and believes in chiropractic care for athletes of all sports. Dr. Jim also loves educating his patients on how to live healthy lifestyles and that chiropractic care is for more than just pain relief.

Dr. Bianca Oldershaw
Doctor of Chiropractic
Education:
Life University, Marietta, GA – Doctor of Chiropractic 2017
East Stroudsburg University, PA – Bachelors in Biology 2013
Specializing in chiropractic care for car accident injuries, Dr. Bianca gained experience working for one of the largest chiropractic personal injury clinics in the
Atlanta Metropolitan Area. Through her experience, she understands that no two injuries are alike. Under her care, you can rest assured that you will receive the time and attention your injury needs.
Dr. Bianca believes in utilizing adjustments that allow the body and nervous system to heal to the best of their ability. She tailors her adjustments to the individual’s
needs while employing multiple techniques. This allows her to treat everyone from newborns to adults of all ages. In addition to her expertise in car accident injuries, Dr. Bianca is certified in the Webster Technique. This enables her to deliver gentle and
specific adjustments to pregnant moms, aiding in easier deliveries and pregnancies.
In her spare time, she enjoys running the beautiful trails of Georgia and exploring the
many restaurants that Atlanta has to offer.

Dr Palmer Ribley
Doctor of Chiropractic
Education:
Life University Chiropractic
Dr Palmer Ribley was originally born in Marietta, GA. He was born into a chiropractic family and following in their footsteps, graduated from Life U March 2020. He has a bachelors in Health Coaching. Both of his parents are chiropractors, as well as all of his uncles, and his grandfather who is a co-founder of Life University making him a third generation Chiropractor choosing the chiropractic route to help and serve others. The philosophy of chiropractic resonates deeply with him because it gets to the root of the problem not just masking symptoms temporarily and he strongly believes in trying a more natural and holistic based approach to healthcare before anything else more invasive. His adjusting style techniques include Full spine, Thompson drop, Activator, SOT blocking, and “Y” strap traction.
He is passionate about learning and studying about the power of the mind and body and how they work together. He loves taking care of anyone and everyone and emphasizes the importance of posture. He incorporates some of Dr Joe Dispenza’s and Wim Hof’s teachings into his practice style and life philosophy. His other passions include music, meditating, reading, traveling, nature, and sports to name a few. He played baseball in high school and while in undergraduate studies found a love for volleyball. He produces EDM music as well as DJing on the weekend.

Dr. Shawn Ferguson
Doctor of Chiropractic
Education:
Doctor of Chiropractic, 2000 – Life University in Marietta, GA
Dr. Shawn Ferguson is a licensed chiropractor serving Cobb and Cherokee Counties. His practice is built on a foundation of twenty years of experience, and he believes everyone, young and old, can benefit from a chiropractic adjustment.
With his two associates, Dr. Dawn Mavromatidis and Dr. Tanner Skogen, Dr. Shawn provides care to infants, pregnant women, families, and individuals suffering from sports injuries or other personal injuries. He and his team bring a wide variety of adjusting techniques to the table, treating symptoms like back and neck pain, headaches, and fatigue due to pregnancy. He also provides total family wellness care.
Dr. Shawn is father to four awesome kids ages 16 through 26, all of whom were born at home and have received adjustments since birth. His practice goal is simple: “Listen to our patients’ needs and concerns; then provide them with the very best treatment and care.”

Dr Dawn Mavromatidis
Doctor of Chiropractic
Education:
Life University Chiropractic
Her career path turned just ever so slightly when she met her chiropractor, Dr. Mark Studin. He showed her the healing art of chiropractic and made a profound impact in her life. He sent her down to Georgia to attend Life University Chiropractic School to get her education. She and her husband Harry fell in love with the South and decided to stay and start their family.
Dr. Dawn has four children, and many animals (5 dogs, 3 cats, 3 parrots, 5 alpacas, 2 horses, a donkey and a flock of chickens), and is living her dream! She found that with chiropractic she didn’t have to choose between caring for kids or animals, she can do both! She followed her passion and now specializes in women’s health, infant and children’s health and wellness, and caring for animals. For her chiropractic is truly for ALL members of the family: young and old, big and small, two and four legged. When Dr. Dawn isn’t in the office, you can find her at the barn, either adjusting or riding her horses or spending time outside. She loves to garden, camp, kayak, hike and travel. She believes that chiropractic is more than just an adjustment, but a lifestyle that encompasses taking care of your mind, body, and spirit.

Dr. Tanner Skogen
Doctor of Chiropractic
Education:
Life University
Dr. Tanner started as a peak intern with our office in October 2022. In addition, and on his own free time, Dr. Tanner has attended multiple adjusting workshops and seminars over the last three plus years. Dr. Tanner grew up in Woodstock and was introduced to chiropractic by Dr’s Dan and Kristin Ribley at age 10 when they had their practice over at Buckhead crossing. He went to school at Carmel Elementary, Woodstock Middle School, and Woodstock High School where he played both varsity baseball and varsity football. He graduated with honors from Woodstock High and received a four-year full scholarship to Furman University for football where he played all four years and again graduated with honors.
He then enrolled in Life University chiropractic school in Marietta where he distinguished himself as an exemplary student, making the dean’s list multiple times. He passed all four national boards before graduating Magna Cum Laude and completing his Pediatric Adjusting certification, in time to welcome his first child this past July.

Dr. Peri Fletcher
Doctor of Chiropractic | Fitness Specialist | Clinical Nutritionist
Education:
Doctor of Chiropractic – Life University in Marietta, GA
A.S. — State University of New York, Suffolk
Acknowledgements:
Nutritional Specialist, Dr Ulan’s Nutritional Response Testing
A native of Long Island, NY, Dr. Fletcher attended SUNY Suffolk, where she earned a degree as a fitness specialist. While working toward that degree, she encountered several chiropractors and was impressed by their knowledge of preventative healthcare. These encounters inspired her to attend Life University in Marietta.
Following graduation, Dr. Peri went into practice in Atlanta and began integrating nutritional guidance into patient care. Today, her practice emphasizes patient education, the importance of physical activity, and maintaining a healthy lifestyle.
After hundreds of hours of post-graduate education, Dr. Peri earned the title of Clinical Nutritionist. Using an analysis technique developed by Dr. Freddie Ulan called Nutrition Response Testing, she is able to identify the exact organs that are nutritionally deficient in her patients. From this analysis, she designs a natural health improvement program for specific conditions.
Dr. Peri, her husband, and four children live in Canton, GA. New and prospective patients can learn more about Dr. Peri’s practice on her website: healthcoachdc.com.

Dr. Ally Ranches
Doctor of Chiropractic
Education:
Life University Chiropractic
Dr. Ally Ranches is a 2016 graduate of Life University in Marietta, GA. From a young age Dr. Ally knew she wanted to find a career which involved helping people, and discovered chiropractic after experiencing debilitating migraines which were not responding to conventional medical interventions. Her approach to adjusting is tailored to each individual. Dr. Ally utilizes the drop table, manual adjusting, and instrument adjusting for some individuals. After experiencing treatment with many techniques herself, she truly believes that each individual’s care will look different. She strives to provide individual treatment to each patient, connecting with the patients as individuals to better encourage their journey to better health.
Growing up in a military family gave Dr. Ally the chance to see different places but she is now proud to call Georgia home. She looks forward to serving the Woodstock community, including local veterans and their families. In her free time she enjoys hiking with her dog Otis and has the goal of seeing each waterfall in north Georgia. Dr. Ally played basketball, soccer, and softball through high school and enjoys cheering on the Braves and Atlanta United. Dr. Ally is excited to be in Woodstock as part of Ribley Family Chiropractic.

Dr. Heidi Arabia
Doctor of Chiropractic
Education:
Doctor of Chiropractic
With 27 years of experience, Dr. Heidi is dedicated to helping her clients move better, feel stronger, and live pain-free through hands-on, results-driven chiropractic care. Whether you’re chasing after little ones, balancing work and self-care, staying active in your favorite hobbies, or simply wanting to feel your best as you age, Dr. Heidi provides expert, personalized treatment to support your body at every stage of life.
She specializes in manual chiropractic adjustments, using precise, hands-on techniques to restore movement, ease tension, and relieve pain. To enhance healing and recovery, she also incorporates a degenerated disc decompression table, instrument-assisted adjustments, and specialized therapies to improve spinal health and mobility.
Her special interests include:
- The Schroth Method – a targeted approach for scoliosis treatment
- Vertebral axial decompression – for relief from herniated or degenerative discs
- Flexion-distraction therapy – to restore spinal mobility and reduce pain
- Craniosacral Therapy – a gentle technique that promotes nervous system balance and deep relaxation
From growing kids to busy moms to active, health-conscious women, Dr. Heidi provides care designed for real life—helping you move with ease, feel confident in your body, and stay vibrant at every age.

Dr. Dorinda Walsh
Doctor of Chiropractic
Education:
Doctor of Chiropractic
With 25 years of experience, Dr. Dorinda Walsh at Ribley Chiropractic provides expert chiropractic care and holistic wellness support to help patients of all ages and lifestyles move, feel, and live better. Whether you’re an active professional, a weekend warrior, a busy parent, or someone looking to maintain long-term health and mobility, Dr. Walsh delivers hands-on, results-driven care tailored to your unique needs.
Her approach goes beyond simple pain relief—she focuses on restoring movement, enhancing performance, and promoting long-term well-being. Through precise chiropractic adjustments, nutritional guidance, and personalized lifestyle coaching, she empowers her patients to take control of their health and feel their best every day.
Whether you’re dealing with work-related tension, sports injuries, chronic pain, or just want to stay strong and active, Dr. Dori is committed to helping you move with ease, feel confident in your body, and enjoy life to the fullest.

Dr. Ashley Hopkins
Doctor of Chiropractic
Education:
Life University
Dr. Ashley Hopkins is a 2014 graduate from Life University, in Marietta, GA, where she earned her Doctorate of Chiropractic degree. Prior education includes a Bachelor’s degree in Biology, with specific focus in anatomy and physiology. Since 2014 she has practiced with many athletes and specializes in the biomechanics of the body and balancing the musculoskeletal system.
Dr. Ashley makes sure to individualize her care to each patient and guides them in meeting their healthcare goals. She feels like it is her purpose to provide the highest quality of care to each patient and to help them live to their highest.

Dr Stephanie Lemos
Doctor of Chiropractic
Education:
Life University Chiropractic
Dr. Stephanie Lemos earned her bachelor’s degree in Nutrition and Dietetics. She worked as a nutritionist for 4 years before attending Life University to earn her Doctor of Chiropractic degree. She has been practicing chiropractic for more than 10 years helping patients of all ages. Dr. Stephanie focuses her care on low and moderate force adjusting techniques for families, including children and pregnant mothers. She also treats athletes of all levels from elementary-age gymnasts, cheerleaders, football players, wrestlers, etc. up to NFL and PGA golfers.
Dr. Stephanie knows the power of chiropractic care firsthand, not only through the people she serves but within her own life. She first experienced chiropractic care when her son was an infant. He had colic in his early weeks of life and after just 2 adjustments his colic subsided completely!
Her personal mission is to impact as many people as possible with the power of chiropractic, and she’s grateful every day that she’s able to make a difference in the lives of those she serves. Her biggest motivator is the smiles of patients that no longer experience pain and are now able to sleep more soundly, walk or run.
In her free time, Dr. Stephanie loves spending time with her husband and 4 children and enjoys traveling to new parts of the world! You will catch her at all of her children’s school and sporting events on the weekends in the Woodstock area!

Dr. Zoë Pogrelis
Doctor of Chiropractic – Perinatal Certified
Education:
Doctor of Chiropractic – Life University in Marietta, GA
Dr. Zoë Pogrelis is a native of Woodstock and a graduate of Life University in Marietta, GA. As the daughter of chiropractors, she has been around the profession since birth. Her approach to chiropractic care is modern, comprehensive and gentle. Focusing on the neurology of the adjustment is one of her passions.
Gentle techniques and modern equipment allow Dr. Zoë to treat patients without their needing to “recover” from an adjustment. The gentle nature of her adjusting technique is great for people with conditions such as fibromyalgia.
Dr. Zoë believes that every person with a brain and spine should be under chiropractic care, including children. She always reminds patients that there is nothing that happens in the body that is not controlled by the brain via the spinal cord. In addition to spinal care, Dr. Zoë treats sports and extremity injuries. Her favorite part of being a chiropractor is watching people blossom physically and mentally once they are well adjusted, oftentimes exceeding all expectations. She is proud to have a practice which is inclusive and welcoming to all.
In her free time, Dr. Zoë likes to play with her two dogs, listen to live music, cheer on the Falcons and the Bulldawgs, travel, and spend time with family and friends.

Dr. Sarah Porray
Doctor of Chiropractic
Education:
Life University
Chiropractic chose me. I worked in fitness for nearly ten years in New York City, managing private corporate fitness centers located in downtown Manhattan. I loved fitness, but I reached a point in my career where I knew something was missing, so I decided to go back to school to become a doctor of physical therapy. I was working full time and attending classes part time to satisfy my pre-requisite requirements for DPT school, when I met a chiropractor that changed the course of my professional and personal life forever.
After I met this chiropractor, I remember having a dramatic reaction to his suggestion that I become a chiropractor instead of a physical therapist. I had set my course and it really annoyed me that someone I barely knew was giving me unsolicited advice about my future. Little did I know at the time, our conversation set in motion a great awakening in my life. After two weeks under chiropractic care, my own problem resolved. After less than a year under care, I decided to attend chiropractic school instead of PT school. A year and a half after my first ever chiropractic adjustment, I moved to Marietta, Georgia to attend Life University.
The journey to becoming a chiropractor is not easy. It requires massive change, personal development, sacrifice and passion. This is why chiropractic is a calling. Standing on the other side of it, I am beyond grateful and I wouldn’t change a single thing. I absolutely love chiropractic and I love the incredible opportunities my second chosen career has afforded me. Sharing my skills and knowledge with other people on their journey through healing is a cherished honor. I love what I do and I can’t wait to serve you!
I would describe my approach as gentle and intuitive. I work with each patient to individualize a care plan that is specific to their unique needs. The services I provide address structure, function, deep connection and breath. Each of which provide a strong foundation for living WELL.

Dr. Emily Whynot
Doctor of Chiropractic
Education:
Life University

Dr. Omar Nieves
Doctor of Chiropractic
Education:
Doctor of Chiropractic – Life University in Marietta, GA
Dr. Omar is originally from Puerto Rico, where he obtained a bachelor’s degree in Science. In 2016, he completed a Doctorate in Chiropractic at Life University in Marietta, GA. At Ribley, Dr. Omar focuses on family wellness and provides care from the youngest to the wisest.
Dr. Omar believes that God created us with a specific purpose to fulfill He also believes that healing is a gift from God and that staying healthy is our responsibility. His goal is to bring hope to those in despair and help every patient perform their purpose in life in a more pleasant and enjoyable way.
To Dr. Omar, nothing is more valuable than relationships. What he loves most about his job is the opportunity to connect with patients, know them, and be part of their story.
Dr. Omar is an active member of his local church, serving as a board member, teacher, and bass player with the worship band. Outside the office, he loves spending quality time with his family, going for hikes, and playing basketball.

Dr. Caleb Brewer
Doctor of Chiropractic
Education:
Doctor of Chiropractic – Life University in Marietta, GA
Graston Technique Specialist (GTS) certification
Dr. Caleb is originally from Charleston, SC, where he began wrestling at the age of six, developing the faith, discipline, and unwavering commitment to movement that would later shape his approach to chiropractic care. Through every victory and setback, his faith gave him purpose and endurance, teaching him not only how to push his body to its limits, but also how to rebuild it stronger than before.
Guided by his faith, Dr. Caleb believes his work is not just about healing bodies but also about uplifting spirits and helping others live fully. For him, chiropractic care is a calling—a way to serve others and live out his faith each day.