Who We Are

Founders and SCI-FIT Staff


Dan Dumas & Annabelle Constantin

Founders, CEO and CFO

On June 3rd, 2005 Dan was hit by a wave while vacationing in Maui and broke his neck, leaving him with a C-5 incomplete spinal cord injury. He spent three months in the hospital after fusing his cervical vertebrae. Dan was told repeatedly that would never walk again, let alone move anything below his level of injury.

Dan and his wife, Annabelle, refused to believe this prognosis and began searching for alternative therapies for spinal cord injuries. One week after being discharged from the hospital they moved to Southern California to start an intense exercise-based recovery program. Dan began working out two hours a day five days a week. Dan saw tremendous progress within the first couple months and by the sixth month mark, Dan took his first steps in a walker. By the end of his program, Dan was no longer using a wheelchair, and walked with a walker or crutches full time.

Dan and Annabelle decided they wanted to create an opportunity for individuals with spinal cord injuries to participate in an aggressive therapy program without having to re-locate. Dan and Annabelle opened SCI-FIT Pleasanton in 2007 and have been in integral part of the business operations of the company. In 2014 a second location was opened in Sacramento making this program available to more people with neurological disorders in Northern California.

Lance Hansen

Co-Founder, Co-Owner, Vice President

Lance grew up in Palo Cedro, CA where he enjoyed the beautiful outdoors of Mount Shasta wake boarding, snow boarding, sking, camping, hunting and playing soccer.  In the summer of 2012 while at work he was injured and sustained a spinal cord injury at the chest level making him a T5/T6 incomplete paraplegic.  He spent three months in the hospital and was told time and time again he would probably never walk.  Refusing to accept this fate, Lance searched alternative therapies and found SCIFIT.  He fell instantly in love with the programming and for the first time saw hope in his recovery.  Lance has been devoted and dedicated to his workouts at SCIFIT for over 6 years.  He pushes himself everyday to continue improving and breaking past every boundary that he was told he would never be able to do.  Along with working out hard at SCIFIT Lance has taken part in two medical trials, Stem Cells in Switzerland and he has an epidural stimulator placed on his spine.

SCIFIT inspired Lance to help others in the same position. Lance has joined the SCIFIT team of co-founders in 2019.  He hopes to make this type of therapy available to all and never let anyone feel like they don’t have a chance for recovery.

Lance Hansen

Michael Terrell

Mike Terrell

Founder, Co-Owner, COO, Neuro Exercise Specialist
Mike excelled in collegiate football and track and received All-Conference Honors for both sports. After graduation, he followed his passion for fitness as a sports performance coach. Throughout his career and education, Mike has worked with a myriad of athletes from different sports, ages, injuries, and backgrounds.Mikes vast background in fitness/wellness and coaching has proved to be invaluable at SCI-FIT. His creative and methodical training programs will cover all of your needs, from strength, endurance, mobility, as well as more technical aspects of learning movements. Mike’s coaching techniques will help you uncover strength you never thought you had.

Mike is a co-founder and Sports Performance Trainer at Prodigy Performance where he specializes in coaching young elite athletes. When Mike isn’t working with other athletes, he is training himself for body building competitions.


Education and Professional Training:

  • University of Minnesota, Morris: B.A. Sports Management
  • SCI-FIT Neuro Exercise Therapist Education Program
  • NSCA Certified Strength and Conditioning Specialist (CSCS)
  • Certified Massage Therapist

Kayla Robertson

Sacramento Co-Founder, Co-Owner, Neuro Exercise Specialist
Kayla has played sports all her life. She continued her Track and Field career at Springfield College, where she was awarded All New England and conference honors in multiple events. Kayla leaned about functional training as Strength and Conditioning intern at College of the Holy Cross (Worchester, MA) and the University of Rhode Island. After graduation, Kayla became a personal trainer at a privately owned gym where she worked with clients of all ages and abilities, both one-on-one and in a group setting. She relocated to California and continued her work in functional training and rehabilitation at SCI-FIT. 

Kayla’s leadership qualities and work ethic quickly helped her obtain a management position. She has high expectations for herself and expects nothing less from her clients. Kayla believes that establishing a trusting relationship with the people she works with is the best way to push clients beyond what they thought was possible. Kayla’s comprehensive training program will cover all your needs while coming to SCI-FIT.


Education and Professional Training:

  • Springfield College (Mass.): B.S. Applied Exercise Science 2009
  • SCI-FIT Neuro Exercise Therapist Education Program
  • ACSM Certified Personal Trainer

Kayla Robertson

Steve Nava

Steve Nava

Fresno Co-Founder, Co-Owner, COO, Neuro exercise Specialist
Steve grew up passionate about sports, playing throughout high school and into his freshman year at Chico State.  While at Chico, Steve decided to channel his love for sports into coaching; majoring in Kinesiology with a minor in coaching. During his senior year in college, he had to opportunity to work as a strength coach for the soccer team.After college, Steve began personal training and worked his way up to a managerial position at a fitness facility.  Steve’s dedication, openness to new techniques, and love of learning has helped him work with clients of all levels.   

Steve’s goal is to help clients improve every day.  Even through bad days, he finds ways to motivate his clients to achieve their maximum potential. 


Education and Professional Training:

  • Cal State University Chico: B.A. Kinesiology, Minor in coaching
  • SCI-FIT Neuro Exercise Therapist Education Program
  • TRX Certified

Tamara Link

Arizona Co-Founder, Co-Owner, COO, Neuro Exercise Specialist

Tamara has been involved with sports and fitness since early childhood.  She went to college on a scholarship for softball. Growing up she knew she always wanted to help others with fitness or recovery. Along her journey she has coached, trained, and helped people of all ages. She is currently very active in martial arts and CrossFit. Tamara’s passion is to work with people; challenge, motivate and support them through exercise. At SCI-FIT Tamara guides and pushes her clients to achieve their individual goals. Tamara loves to use her creativity to apply different exercises to her clientele. She brings a charismatic smile and light to the atmosphere every day.


Education and Professional Training:

  • Tiffin University: B.S.Exericse Science
  • SCI-FIT Neuro Exercise Therapist Education Program

tamara link

devin newsome

Devin Newsome

Petaluma Co-Founder, Co-Owner, Neuro Exercise Specialist
Devin has been involved with sports his entire life, which led to playing football at San Jose State University.  While in college, Devin worked as a personal trainer and a strength coach for a mixed martial arts team.After college, Devin was a personal trainer and fitness manager before coming to work at SCI-FIT.  Through his years of personal training, he has worked with a very wide range of people and those experiences help him to make sure that he is helping to put together a program to get the most out of everyone that comes into SCI-FIT.


Education and Professional Training:

  • San Jose State University: B.S. Kinesiology
  • SCI-FIT Neuro Exercise Therapist Education Program
  • ACSM Certified Personal Trainer
  • Crossfit Level 1 Certified

Mitch Ebner

Fresno Co-Owner, COO, Neuro Exercise Specialist

I was born and raised in Fresno and grew up playing every sport imaginable, which eventually led me to a love for playing soccer and baseball. My love for sports and eagerness to learn more about how the body functions led me to earning a bachelor’s degree in Kinesiology at California State University, Fresno.

I love getting to know every single one of our clients on a personal level, it’s the environment that we here at SCI-FIT Fresno strive to create, one that feels like family. I am truly humbled every day by our client’s hard work and dedication towards their recovery goals, which quickly become my goals. I’ll tell every one of our client’s that nothing is impossible, there is nothing stopping you. Be consistent, work hard, and most importantly believe in yourself to make what some believe impossible, possible!

Education and Professional Training:

  • California State University, Fresno, B.S. Exercise Science
  • SCI-FIT Neuro Exercise Therapist Training Program
  • Certified Ergonomic Assessment Specialist

Mitch Ebner

jessica wells

Jessica Wells

Petaluma Co-Founder, Co-Owner, Neuro Exercise Specialist

Jessica grew up with a love for fitness. She was a gymnast and competitive cheerleader throughout high school and got into CrossFit when she was in college. Jessica has experience coaching gymnastics and swimming as well as working and aiding in multiple PT clinics. She graduated from Sonoma State University with a bachelor’s degree in Kinesiology and a concentration in exercise science. Jessica loves the atmosphere of SCI-FIT and getting to make an impactful difference in the lives of her clients. Seeing them improve and gain back their independence is what keeps her going!

Bobby Huntington (Licensed at the Dublin California location only)

Licensed Physical Therapist

Bobby Huntington is a licensed physical therapist specializing in neurological activity-based rehabilitation . Bobby has a bachelor’s degree is Exercise Science from the University of Toledo and a postgraduate doctorate degree from Rosalind Franklin University. He holds advanced certifications in functional electrical stimulation and in PWR Moves (for people with Parkinson’s). Bobby has 4 years of clinical experience as a neurological physical therapist working with a wide variety of neurological conditions, including Spinal Cord Injury, Multiple Sclerosis, Parkinson’s Disease, Cerebral Palsy and Pediatrics. Bobby has a non-traditional approach to physical therapy interventions, where he focuses on recovery below the level of injury or of the affected side. He utilizes novel approaches and current research in his treatment sessions to maximize central nervous system excitation and neurological recovery. He is well versed in various modes of electrical stimulation, whole body vibration and locomotor training.  Bobby enjoys challenging his clients and pushing them to do something new and creative each time they’re in the clinic.

Bobby Huntington


6735 Sierra Ct, Suite E
Dublin, CA 94568

(925) 846-1848


2404 Del Paso Road
Sacramento, CA 95835

(916) 928-3736


5816 E. Shields Ave. Suite #115
Fresno, CA 93727

(559) 298-7221


5330 Old Redwood Hwy
Petaluma, CA 94954

(707) 992-0786


2160 N. Alma School Rd, Suite 124
Chandler, AZ 85224

(602) 781-5336