Taylor-Kevin Isaacs D.Sc(c), CPT-MES, CSCS, NASM-CES, MELT, PN1

Co-Founder / Owner / Chief Clinical Exercise Physiologist & Kinesiologist / Creator of TKI System of Function

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Taylor is an award winning Kinesiologist / Exercise Physiologist, Medical Exercise Specialist, Corrective Exercise Specialist and Certified Strength and Conditioning Specialist. This former associate professor of Kinesiology at California State University in Northridge was named the IDEA Trainer of the Year in 2002, the American Council on Exercise (ACE) Trainer / Clinical Exercise Specialist of the Year in 2002, and was the two-time Grand Champion MET-Rx World’s Best Trainer in 2000 and 2001. In July 2009, he was honored and recognized as an award winning IDEA expert author. Taylor has obtained an interdisciplinary doctorate degree (D.Sc[c]) in health promotion, and human performance.

“My mission is to afford every client the opportunity to have an accessible, comfortable and complete recovery experience at our facility - C.O.R.E - an optimal healing environment.

My unwavering practice-culture beliefs are: 
- “One size fits nobody”
- “Exercise is for every-body”
- “The process is the progress”
- “Better has no finish line”

I am grateful that I have a staff of highly-degreed, highly-qualified restorative exercise advisors and specialists eagerly willing to help each client reach their goals with a well-planned restorative exercise program, in the optimal manner to which C.O.R.E clients are accustomed. It is with these client-centered values that my staff and I resolve to provide every client with world-class compassionate care.”

Professional Memberships:

  1. A.C.S.M – American College of Sports Medicine

  2. N.A.S.M – National Academy of Sports Medicine

  3. N.S.C.A – National Strength and Conditioning Association

  4. A.C.E – American Council on Exercise

  5. I.D.E.A Health & Fitness Association – International Dance-Exercise Association

  6. N.P.I. – National Posture Institute

  7. M.E.L.T – Myofascial Elongation Lengthening Technique

  8. I.H.R.S.A - International Health, Racquet and Sportsclub Association

  9. A.C.S.M/E.I.M – American College of Sports Medicine/Exercise is Medicine Credentialed Center of Distinction

  10. PN1 - Precision Nutrition Level 1 Certification


Brittney Barfield M.S.

Directory of Facility Operations / Team Lead / Master Restorative Exercise Specialist

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Brittney is currently a Restorative Exercise Specialist at C.O.R.E. She graduated from California State University of Northridge with a Bachelors degree in Kinesiology and a Masters Degree in Exercise Physiology.  She has been working at C.O.R.E since 2011.


“I couldn’t be happier to have found a place like C.O.R.E… I was drawn to C.O.R.E because I was inspired by the work of Taylor Isaacs and the unique approach in which they took on rehabilitation. It is here that I am able to work one on one with my clients and help them to reach their fullest potential. It is my passion here at C.O.R.E to provide hope, strength and possibilities for my clients. It feels good to be a part of a strong team filled with amazing individuals. I hope to continue to give inspiration to my clients as they continue to inspire me.”


Jon Gorospe B.S.

R.E.S. (Restorative Exercise Specialist)

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Jon holds a Bachelors degree in Kinesiology from California State University Northridge (CSUN) and has completed his course-work towards a Masters degree in Adapted Physical Activity at CSUN. Jon has worked at the Center of Achievement at CSUN as a teaching associate, helping undergraduate students learn and implement adapted exercise programs for individuals with a disability. Jon has experience in land-based and aquatic-based therapeutic exercises, motor development skills with children, as well as collegiate level sports training with the Women's Basketball team at CSUN.

Jon is looking forward to learning and sharpening his craft so that he can provide the best quality of training and service to those at C.O.R.E.


Sam Mayhall B.S.

R.E.S. (Restorative Exercise Specialist)

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Sam holds a Bachelor's of Science in Kinesiology within the option of
Applied Fitness and Active Lifestyle Development. He plans to pursue a
higher degree in the near future, but for the time being, has sought after completing certifications to further his knowledge. Sam has worked for Southern California Orthopedic Institute as a PT aide, as well as working at CSUN’s Center of Achievement, helping students or clients in both Land and Aquatic therapy. Throughout his experience’s Sam has found immense joy in helping others reach the goals they set through physical fitness and restorative exercise.

Outside of C.O.R.E, Sam is an avid golfer and snowboarder and enjoys spending most of his time outdoors.


Stephanie Mendoza B.S.

R.E.S. (Restorative Exercise Specialist)

Stephanie holds a Bachelor’s of Science in Biology (pre-med) from Mount Saint Mary’s University. Stephanie plans to continue her education and pursue a higher degree in the future, but for now she is completing her doctoral degree admission requirements. Stephanie has worked for 3 different facilities as a PT aide, assisting an outpatient population to regain movement and manage pain after injuries, illnesses from chronic conditions, and recovering after surgery. Stephanie has also worked as a trainer for the youth, leading a program developed to get elementary school level girls prepared and ready for running a 5K.

Stephanie is passionate about rehabilitation and creating connections with patients, as well as collaborating with clinicians and other like-minded individuals. Stephanie in her spare time also volunteers for the Los Angeles Mission and SOVA LA, feeding the homeless and those in need, coaches youth baseball, and enjoys watching her favorite team play, The Los Angeles Dodgers.


Matthew (Mags) Salvador B.S.

R.E.A. (Restorative Exercise Advisor)

Mags is a graduate of California State University, Northridge. In 2020, Mags earned his Bachelor of Science in Kinesiology, with the option of Exercise Science. While in his Bachelor's program, Mags worked as an intern at the Center of Achievement, helping undergraduate students learn and implement adaptive therapeutic exercises in an aquatic setting, as well as working with children with special needs. 

Mags has been a Restorative Exercise Advisor at CORE since September 2022. Mags wants to gain more experience and grow in knowledge in the field of adapted exercise, and continue to learn how to help people with disabilities. Outside of CORE, Mags likes to go to the beach to surf and spend a lot of time outdoors.


Diego Rodriguez B.S.

R.E.A. (Restorative Exercise Advisor)

Diego holds a Bachelor of Science in Kinesiology from California State University, Northridge. He is currently working on completing his Master's Degree in Adapted Physical Activity and has experience working with individuals with disabilities through the Center of Achievement at California State University, Northridge. During his time at the Center of Achievement, Diego worked as a lab instructor for both the land and aquatic therapeutic classes. Diego also has experience working in elementary schools through LAUSD and YMCA as a PE teacher.

Diego has been working at CORE as a Restorative Exercise Advisor since December 2022, and is continuously working on his professional growth. In his free time, Diego enjoys spending time with his family and friends as well as watching soccer matches. His favorite teams to support are Real Madrid and his hometown team, Chivas.


Colby Cabrera B.S.

Front Desk Administrator

Colby is our front desk admin. She has been working at CORE since October 2022. She is a 2023 graduate from California State University, Northridge, with a Bachelor of Science in Marketing. With this degree, Colby hopes to pursue a career doing graphic design marketing for a small business. For now, Colby wants to use her marketing knowledge to help CORE expand its online presence and community as well as spread more awareness about different disabilities and illnesses. Outside of work, Colby enjoys playing video games with friends and designing flyers, party invitations, and more.

"Being a part of CORE has been a huge blessing. It is inspiring seeing our clients so dedicated and motivated to reach their goals. I am happy to be a part of a team that encourages and pushes me to reach my own fitness goals."