Meet Our Team


John J Carroll, Psy.D

Clinical and Sport Psychologist, Cert. Personal Trainer

Dr. John J. Carroll is a Licensed Clinical Psychologist and Certified Personal Trainer.  Dr. Carroll has worked with athletes of all ages as a trainer, coach, and psychologist. He began his career playing football and baseball at Phillips Academy, Andover, and then Amherst, moving into coaching thereafter. He coached high school football and college baseball before moving on to the Dragon Athletic Conditioning program for 4 summers in Eastern Massachusetts as athletes prepared for high school, college, and pro careers.  Dr. Carroll became a certified personal trainer in 2004 and created his holistic programs, classes, and workshops for clients in Los Angeles, CA. In 2012 he began his doctoral program, where he gained clinical experience for his pre-and post-doctoral work in drug and alcohol addiction and treatment in Los Angeles.  

His first sport psychology book 'How to Play the Best Game of Your Life" is being released in the fall of 2022.    In 2018, Dr. Carroll was part of the first online program to serve Veterans in coordination with the Veterans Administration, working with combat and disabled veterans who were struggling with mental health.  Dr. Carroll performs workshops with teams, gives lectures and works one on one with athletes. He is still active as a certified personal trainer, enjoys running marathons, and is an avid musician.

Renee H

Renee Hernandez


Renee earned a bachelor's degree in Behavioral Science at Cal State University of Dominguez Hills before going on to work on her Master of Social Work with an emphasis on mental health at the University of Southern California.  After changing degree paths, she began working in the medical field on the front lines in an acute medical facility where she gained a wealth of knowledge and experience working with people in need of care and treatment across all spectrums: mental, physical, and emotional. Having played Softball for many years she has a great understanding of what it takes to work hard and achieve on and off the field. She's an avid sports fan and enjoys going to local games with her family. Caring for people has been a lifelong passion that ultimately led her to plant her feet at OC Sport Psychology, Renee contributes her experience to the team by reaching people where they are at offering her superb care to our clients. 

Aaron Thomas

Aaron Thomas, M.A

Mental Performance Consultant

Aaron Thomas is a sports psychology trainee, mental performance consultant, and neuropsychology trainee. He earned a master's degree in Clinical Psychology from Azusa Pacific University, where he is currently a doctoral candidate in Clinical Psychology. Aaron is currently pursuing his certification as a mental performance consultant (CMPC). He has worked with collegiate and youth athletes to help them more consistently operate at their peak performance by strengthening their mental game. His work with baseball players includes helping them develop confidence on the mound and at the plate by leaving behind errors and bad at-bats. As well as maintaining focus and working through performance slumps. Aaron played football and rugby at the collegiate level. He also cycled across the United States to raise funds for clean water. Aaron is passionate about helping performers enjoy their craft while reaching their goals.

Elise N

Elise Nelson, M.A 

Mental Performance Consultant 

As a multi-sport athlete, Elise competed in soccer, basketball, softball, and alpine ski racing.  She played with the Olympic Development Program (ODP), and won two state championships in soccer and one in basketball during her high school career. She is an experienced youth coach in ski racing and soccer and has coached on the individual level as well as in group settings. As a therapist, she combines her personal experience from playing high-performance sports, coaching, and various strategies she's developed as a mental performance consultant to deliver unique insight rooted in assisting athletes to reach their performance goals.

Elise earned a bachelor's degree in kinesiology at the University of Kentucky with an emphasis in exercise physiology. She is currently attending Azusa Pacific University while completing her doctoral degree in psychology and working toward her certification as a Mental performance consultant (CMPC). In particular, Elise is interested in psychophysiology and the use of biofeedback to enhance performance. She uses Cognitive Behavior Therapy (CBT) in her consultations and has a particular interest in working with ADHD throughout the lifespan. 

Elise also conducts seminars for OC Sport Psychology, partnering with a variety of Sports and clubs within our local community. She provides presentations for Mental Health + Sport Psychology events. She discusses topics that are centered on understanding and maximizing the mental game within sport performance and how to turn obstacles into your edge

Austin A

Austin Alvarez, M.A.

Mental Performance Consultant

Austin Alvarez, M.A. is a sports psychology trainee and mental performance consultant. He works closely with athletes to set effective goals, build greater self-awareness, and improve confidence. Austin earned a master's degree in marriage and family therapy from Azusa Pacific University. He is currently a doctoral candidate at Azusa Pacific University and is pursuing his certification as a mental performance consultant (CMPC). Austin intends to become a licensed psychologist once he has completed his PsyD degree. Austin was a three-sport athlete in high school, playing football, basketball, and soccer. He also coached football and basketball at the high school level, and he currently teaches undergraduate classes in general psychology and stress and coping methods at Azusa Pacific University.

Kojo Arhin, M.A.

Kojo Arhin  M.A.

Mental Performance Consultant, and Reg Psychological Associate | PSB94024700

Kojo Arhin, M.A. is a registered Psychological Assistant. He provides consultations with individual athletes and teams. Kojo earned a master’s degree in sport and exercise psychology and is a doctoral candidate in clinical psychology with an emphasis in sport and performance psychology. Upon completion of his doctoral degree, Kojo intends to become licensed as a psychologist. He is also a certified mindfulness practitioner. 

He played professionally as a wide receiver in arena football for the Billings Outlaws and as a former scholarship athlete in football at Northern Arizona University and as a certified strength and conditioning coach Kojo's professional work and athlete experience are broad and unique. His work in mental skills training includes high school football, draft preparation training for NFL-bound college football players, NFL veteran player off-season preparation, professional tennis, amateur tennis, soccer, track and field, basketball, and baseball. 

Kojo has worked with hundreds of athletes around the country over his 13-year career as a coach and consultant. He enjoys helping individuals, teams, coaches, and parents with developmental strategies to optimize their performance when under pressure. Kojo’s passion is to help athletes and performers unlock their potential.

Melissa BrownMelissa Brown


Melissa brings over 25 years of administrative experience to OC Sport Psychology. Combined with a life-long love of sports, she provides a high level of expertise and service to our clients. Growing up as a multiple high-level athlete herself (platform diving which culminated in interest from UCLA), she understands the complexities and rigors of training and the effects they have on body, mind, and soul. Her training in the medical field as a Surgical Technologist and an Office Manager for a Pediatric group has given her valuable hands-on experience.  Working behind the scenes she creates a warm comfortable environment for all. 

Melissa has three sons, two of whom have played high-level sports.  Her oldest, a southpaw, pitched for his varsity high school baseball team and graduated from the University of Utah. Her middle son received multiple scholarships offers to play Lacrosse, ultimately choosing a private university in the Midwest.  Melissa continues to utilize her unique creative talents and gifts to help facilitate and oversee the day-to-day procedures of OC Sport Psychology.

Dr. Ben Strack

Ben Strack  Ph.D.

Clinical and Sport Psychologist

Dr. Ben Strack, owner, and founder of OC Sport Psychology. He is a licensed Psychologist, Sport Psychologist, Certified Mental Performance Consultant (CMPC), and Board Certified in Biofeedback (BCB-BCIA). Dr. Strack has consulted with professional athletes across multiple sports: MiLB/MLB, NHL, NBA, PGA, MLS/USL, Olympic, and Olympic aspiring athletes (Women's Indoor Volleyball, Swimming, Speed Skating, Fencing, Sprint Kayaking, Track, and Field). 

Dr. Strack serves as an Assistant Clinical Professor, University California, Riverside School of Medicine, and founding faculty, UC Riverside sports psychiatry fellowship. Dr. Strack also serves as the team sport psychologist for OC Soccer Club (USL). Dr. Strack is the author/editor of the sport psychology book “ Applications of biofeedback and neurofeedback in sport psychology ” (2011). He is a former Division I college baseball player and founding partner of Proball Inc., a private baseball academy. During the 1999 and 2000 MLB seasons, he was the batting practice pitcher for the Los Angeles Angels of Anaheim. From 1999 to 2004, he was hand-picked to pitch in the MLB Players’ Association and ESPN’s Big League Challenge Home Run Contests where he was the personal pitcher for Barry Bonds, Alex Rodriguez, Raphael Palmeiro, Jose Canseco, Shawn Green, Magglio Ordonez, Andruw Jones, and Troy Glaus.

Dr. Strack is a United States Olympic Committee (USOC) Sport Psychology Registry Member, 2017 President of the Orange County Psychological Association, and a co-chairperson for the Optimal Performance/Functioning division of the Association of Applied Psychophysiology and Biofeedback. He is also an active member of the American Psychological Association (APA), American Baseball Coaches Association, and the Association for Applied Sport Psychology (AASP).

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