Devin Vrana, DC


Dr. Devin Vrana is a girl from America's heartland. She studied and earned a bachelor degree in Kinesiology from Kansas State University. She continued her education in Kansas City at Cleveland Chiropractic College. It was there that she met the love of her life, Dr. Joey Vrana. The two graduated in August 2010 from CCC. They moved back to their hometown area with their oldest son, Roman, and opened their first Office on Main Street in Goddard, Kansas. They were soon blessed with their first set of twins--Jagger and Knox--in May 2011. As their business and passion/purpose to serve grew, the two decided in 2013 to open another office, Dr. Devin's solo practice location, in Wichita, Kansas. In years followed, both practices continued to grow and thrive and then in a beautiful twist of fate, Drs. Vrana we are blessed in 2016 with a second set of twins--Magnolia and Phoenix. 


Dr. Devin is a mother of five wonderful children, wife to an amazing man and Chiropractor determined to serve the masses. She is an active student and teacher of the art of Chiropractic. She is a passionate teller of the Chiropractic Story and protector of its philosophy and science. Her path has been blessed with many great teachers. She completed training with the ICPA. She studied Chiropractic and Acupuncture under the great Dr. Richard Yennie. She has served the Kansas Chiropractic Association on the local and state levels. She has traveled around the nation to speak to the Chiropractic community and traveled the world to serve the mission of loving Chiropractic service. She has received local and state awards--Future Phenom, KCA Young Doctor of the Year, Wichita's 40 Under 40. And she is only just getting started. She sets her roots firmly in the beautiful fields that surround her family's home and she spreads her wings to study, share,  serve and spread the gift of Chiropractic's Sacred Trust.

Ben Greenfield


Meet Ben Greenfield. Raised in rural North Idaho, he was homeschooled K-12. He was a complete nerd. President of the chess club, played violin for 13 years, wrote fantasy fiction and spent most of his childhood years with his nose in a book. Ben graduated at 15. He began college at 16, playing singles and doubles for the men’s tennis team.

For four years, Ben studied anatomy, physiology, biomechanics, pharmaceuticals, microbiology, biochemistry and nutrition, eventually rising to the top of his class, completing an internship at Duke University and the National Football League, then graduating in 2004 at 20 years old as the top senior in his class at University of Idaho – all while working as a bartender, personal trainer, lab assistant, nutritionist, spinning instructor, athletic trainer and strength and conditioning coach. While attaining a 4.0 GPA in his advanced science courses, he competed as president of the triathlon club, middle for the men’s volleyball team, holeset for the water polo team and was a muscle-bound bodybuilder at 215 pounds and 3% body fat.

Ben was then accepted into six medical schools, but opted to instead attain a master’s degree in exercise physiology and biomechanics, after which, in 2005, he leapt hardcore into the fitness world, partnering with physicians and opening a series of personal training studios, gyms and physiology and biomechanics labs across North Idaho and Eastern Washington, and eventually being voted as America’s top personal trainer in 2008.

While building his empire in the brick-and-mortar fitness industry, Ben competed as one of the top ranked amateur triathletes in the world, completing over 120 races and 12 Ironman triathlons while racing for the elite Team Timex multisport team, winning gold medal for the USA in long course triathlon, and leading squads of swim, bike and run enthusiasts in guided adventures through Hawaii, Thailand, Japan and beyond.

Eventually, Ben became the father of twin sons and pivoted into media, writing, speaking and consulting, launching one of the world’s first fitness podcasts, becoming a New York Times bestselling author of “Beyond Training” and 13 books, designing and creating the Christian Gratitude Journal , and starting a blog that now reaches over a million rabid fans each month. During this time, while making a name for himself as a relentless self-experimenter and biohacker, Ben became a professional obstacle course racer, completing the coveted Spartan Delta, training with the Navy SEALs, competing across the globe in open water swims, mountain runs and adventure races, winning multiple USA bowhunting competitions, and appearing on the planet's toughest reality TV shows.

In 2013 and 2014, Ben was named as one of the world’s top 100 most influential people in health and fitness, and by 2015, Ben was coaching the world’s top CEO’s, chefs, biohackers, poker players, tennis, motocross and endurance competitors, and professional athletes from the UFC, the NHL, the NBA, the NFL and beyond – all while advising and investing in top companies in the health, fitness and nutrition industry.

Cliff Hardick, DC


Dr. Cliff Hardick has been in private chiropractic practice for nearly 50 years.  The Executive Chair of Maximized Living since 2017, Dr. Hardick is best known for his years of inspiring messages delivered on college campuses and to audiences at Parker, DE, and ICA conventions.  A 1969 graduate of Logan College of Chiropractic, Dr. Hardick has served as President of the College of Chiropractors of Ontario in the years 2015 through 2017.  In his earlier years, Dr. Hardick studied under prominent technique developers including Drs. Gonstead, Cox, and Fuhr.  Today, he shares his years of wisdom with chiropractic enthusiasts across the globe, with a vision for ensuring that the founding principles of chiropractic will be carried on for generations.  Dr. Hardick was voted Canada’s Chiropractor of the Year in 1993 and continues to serve patients in London, Ontario, in the clinic he founded.


James Chestnut, DC

Dr. James L. Chestnut has been studying human wellness and prevention for over 25 years. He holds a Bachelor of Physical Education degree, a Master of Science degree in exercise physiology with a specialization in neurological adaptation, is a Doctor of Chiropractic, and holds a post-graduate Certification in Wellness Lifestyle. Dr. Chestnut is also the author of ‘The Wellness & Prevention Paradigm’, which is considered the gold standard evidence-based argument for lifestyle intervention. Dr. Chestnut lectures at venues worldwide including colleges and professional conferences regarding lifestyle as the evidence-based foundation of wellness and prevention and 21st Century healthcare reform.  Dr. Chestnut also holds an “O” visa from the United States which recognizes him as one of the world’s leading authorities on evidence-based lifestyle intervention for wellness and prevention. Dr. Chestnut’s efforts have touched many thousands within the natural healthcare community, and through this, millions of patients worldwide.

Josh Axe

Dr. Josh Axe DC, DNM, CNS is a doctor of chiropractic, doctor of natural medicine and clinical nutritionist and operates one of the world’s largest health websites which has over 12 Million visitors a month. He is an expert in functional medicine, digestive health and herbal remedies. Dr. Axe is also a best selling author of Eat Dirt as well as Essential Oils Ancient Medicine. He co-founded the Ancient Nutrition supplement company providing bone broth protein and certified organic herbal formulas. Dr. Axe and his wife Chelsea live in Nashville, TN where they enjoy paddle boarding, functional exercise, Italian food and red wine.

California Jam Refund Policy

So you can't make it to Cal Jam, but you've already bought tickets. What do you do? Beginning in 2016, we have built upon our strict refund policy. Similar to years past, there are no refunds for pre-purchased California Jam tickets. In a few circumstances, we may allow a refund but will require a $35 processing fee. If your ticket total was over $1000, we will take a 5% processing fee. For more information or to inquire about a refund please email with the subject: Cal Jam Refund.

Standard Process - California Jam 2017 Main Sponsor

Our team is happy to announce that the 10th annual California Jam will be sponsored by Standard Process. 

That’s right, Standard Process has teamed up with us again to bring you the biggest and best California Jam yet. Standard Process is not only a loyal supporter of our event, but of the chiropractic profession. Our successful and on-going partnership is rooted in our shared ideals regarding human potential, global sustainability, and community wellness. 

Since 1929, Standard Process has been devoted to providing unparalleled nutritional supplements to their customers while advocating a whole food philosophy introduced by Dr. Royal Lee, which cites that a human body can be truly resilient when given the proper nutrition. 

You can find Standard Process next to the California Jam booth on the Orchestra level. Visit their website to find out more about their purpose and what makes their company so unique. 

Again, Cal Jam would like to recognize and thank Standard Process for their continued support and partnership. With their help, this will surely be the best Cal Jam yet. Get your tickets today at the Cal Jam store! 

New Patient Maven - Official After Party Sponsor

Another year, another Cal Jam After Party sponsored by New Patient Maven! 

The New Patient Maven teaches practice growth techniques to chiropractors. Dr. Brad Glowaki, D.C. is 'The Maven' and is currently in a high-volume practice. He is not a coach, or a part of a Management group, but has frequently been a guest speaker on many occasions for those groups. He has also been a keynote speaker at many State Associations and simply shares methodologies and techniques to communicate the message of chiropractic's benefits to the masses.

The After Party is an opportunity for attendees to interact and raise money for chiropractic research! Tickets are $25 and this year, all proceeds with benefit Haavik Research. 

The theme of this year's party is 70's - so get groovy with your party attire!  

True Cellular Detox - Cal Jam 2017 Gala Dinner Sponsor

We call it an unprecedented networking event because it's where you, as an attendee, can personally and professionally interact with our line-up of world renowned speakers! 

Every speaker attends the Gala Dinner, which takes place on Friday evening of February 24th. Cocktail hour begins at 8pm and dress code is black tie. 

This year, the Gala Dinner is brought to you by True Cellular Detox. Be sure to get your tickets today because spaces are extremely limited! 

Why Cal Jam? A Letter from the Founder - TBT October 2013

The number one “WHY” of Cal Jam is to keep this great profession pure and unsullied, to preserve our great philosophy and principles and keep us drug free!!! That was one of the main reasons I went to chiropractic school, because it was a DRUG FREE healing profession.

One of the main WHYs of Cal Jam is to introduce to the world REAL principle-based chiropracTIC, not an allopathic back pain model. As a teenager I went to huge event called California Jam where 250,000 people gathered to celebrate great music. After going to Dynamic Essentials in the late 80’s and literally having Sid Williams change my chiropractic destiny, I was motivated to take that D.E. energy and elevate to the next level with live music.

Now, after 6 years, our Cal Jam vision not only includes chiropractic as the centerpiece, but we also want to shed light on other issues that plague the health of humans and planet earth in the future. The goal is to create an eclectic health festival with music to attract the general public to the event. This is my first year really opening up the schedule to not only the chiropractic story, but also nutrition, exercise, GMOs, Geo Engineering, Natural Child Birth, Vaccines, Fluoride, Breast Health etc. This year will sell out the 3,000 seat Segerstrom Center for the Arts and it will be the largest premiere chiropractic event on the planet.

As this event continues to grow both in size and financial support it is our goal to attract not only bigger sponsors but also bigger, more popular bands (i.e. Red Hot Chili Peppers or Black Crows). With more prominent popular bands our ability to draw larger crowds will be enhanced.

Cal Jam also hosts a black tie Speakers Gala where you can mingle in full elegance at the Center Club with our rockstar speakers. Saturday is the best party EVER thrown in the chiropractic profession with the band Boogie Knights. Costumes and wigs are optional. Sunday is 5 hours of X-ray, if needed.

If sustainability of pure principled chiropractic, getting the big idea to the world and sustainability of the planet and human race resonates with you, you will love Cal Jam. If celebrating the coolest profession and celebrating in a rock n roll party atmosphere tickles your fancy, then this event is right up your alley. Hope to see you there so we can collectively get chiropractic to the world and save the planet.

Love, BillyD