Dr. John DeWitt



Dr. John DeWitt, D.C., brings his experience with sports injuries to his RepairSI patients as a chiropractor. He graduated from Vanderbilt University where he was awarded a full athletic scholarship after finishing the first semester. He went on to earn a doctor of chiropractic degree from Los Angeles Chiropractic College after retiring from football.

After his first semester at Vanderbilt University, he was starting defensive end for the following four years. His extensive football career included playing for the San Francisco Demons of the XFL, Montreal Alouettes of the CFL, NFL Europe Champion Scottish Claymores and NFL Houston Oilers. He also played on several AFL teams, including three seasons as an LA Avenger.

After watching the 2015 film “Concussion,” he was inspired to revisit his head injuries and write “Head Games: Concussions and CTE, Where Do We Go From Here?” He has penned more than a dozen books covering a wide range of topics, including golf injuries, college scholarships, setting goals and natural vision correction.

Dr. DeWitt has a daily podcast, “BrainBuilders,” as well as an online course, “BrainBuilders Masterclass.” He discusses current research on methods that are not only stopping but reversing cognitive decline in people with cognitive issues, such as Alzheimer’s disease and chronic traumatic encephalopathy. Dr. DeWitt focuses on the efficacy of nutrition-based healing for concussions as well as how it can help prevent severe side effects that stem from head trauma.

Contact Dr. John DeWitt at john@repairsi.com

How We Work

1. REPAIR Cutting edge functional movement assessment
2. REPAIR Mastered diversification plan
3. REPAIR Manual therapy system
4. New age modalities
5. Next level therapeutic exercises
6. RSI Recovery program


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What do we mean by “Functional Medicine?”

At REPAIR SI, Physical Therapy, our Wellness Therapy Method is bridging eastern and western medicine in order to obtain optimal health. We pride ourselves on our proactive holistic 3-tiered approach to functional medicine. Whether it be physical therapy, chiropractic, acupuncture or fitness training, our goal is to make sure you, as a patient, walk away with a healthy mind, body + spirit. We offer a team of professionals to keep you at the top of your active lifestyle. We’ve also partnered with the most innovative, community driven and prolific businesses in order to address every wellness need.

"REPAIR is the best! I've began coming here after an extensive shoulder surgery. Dr. Kati, Des, Josh and the whole crew are awesome. Kati takes the time to talk to you, asks how healing is going and gives you great tips and insight to help you recuperate as quick and as easy as possibly. Then, the awesome, friendly crew takes over and works with you on your healing exercises. The vibe inside is great too! Thanks to the whole crew for helping me get whole again!!!


"From the time you enter to the time you leave, you get a sense of caring amongst all members at Repair. Dr. Nick and his assistants Angel and Allen have rehabbed me to being stronger and most importantly pain free. I highly recommend RSI for your physical therapy needs."


"I’ve been seeing Dr. Nick for several weeks now regarding a knee issue. Out of all the PTs I’ve seen throughout my life, Dr. Nick is the most thorough, patient, informative, and passionate about the progress of my recovery. I especially appreciate his thorough, understandable explanations about the mechanics and physiology behind my injury and the exercises utilized to aid my recovery. Moreover, the actual facility has a wonderful aesthetic/ambience that makes each visit comfortable and enjoyable. Lastly, every single employee at REPAIR SIhas been friendly and a pleasure to interact with.

Overall, a fantastic place for PT (or any other related need). Highly recommended."


"From the time you enter to the time you leave, you get a sense of caring amongst all members at Repair. Dr. Nick and his assistants Angel and Allen have rehabbed me to being stronger and most importantly pain free. I highly recommend RSI for your physical therapy needs. 5 star"

"Dr. Brett and the entire team are first class. I have had multiple surgeries over the years, and some decent PT elsewhere, but the staff and equipment make this the best experience by far. They work hand in hand with Dr. Dee to ensure that I progress according to plan and receive the best care. Thanks to all!"

"REPAIR SIis awesome place for any type of therapy you may need they make you feel like family. Dr. Abtin is the BEST physical therapist I have ever worked with. I have improved so much since coming here after my Achilles surgery . He has a great staff Amy and Allen are AWESOME Allen always comes in with a smile and make it a point to say hello. Amy is awesome when going through my workout she is always positive even when I don’t it wrong. This place is great."

"This is my first experience with PT but I can definitely recommend Repair! This place seems very well run, organized, efficient, and outfitted with a lot of great recovery tools. The staff are super friendly and encouraging to help me get back to 100%.

Dr. Nick Bowden and his team have been really helpful and always have realistic answers to my many questions. Always a pleasure to work with the folks at Repair (including Josh, Austin, Allen, Eric, Conner, Angel)! Thank you all for everything you do!

I’ve also been getting acupuncture with Dr. Sara and she has been such a joy to talk to and work with. She’s very personable and professional! Highly recommend this service with her."

"Hello I don’t usually post reviews for therapists or really anything. But I would just like to say Dr. Brandenburg is exceptional in his care and treatment. I’m a 30 year old firefighter who recently had a major back surgery. Dr. Brandenburg helped me get from not being able to move to being able to perform my job with no ill effect. I can’t speak any higher of his care. He is also a very kind and caring person who put an effort in to get to know his patients. If you are looking for a therapist to get you back to work or feeling better I highly recommend this Dr. Arthur Brandenburg."