Our Providers

Dr. Taylor Sorenson is a Clinical & Sport Psychologist and is the founder of both L.A. Psychological Assessment (LAPA) & Advantage Psychology and Mental Performance Center. She received her doctoral degree in Clinical Psychology from California Lutheran University and completed her doctoral internship at the University of Oklahoma. She completed her post-doctoral training at a private practice in Norman, Oklahoma, where she became the Clinic Director and oversaw the assessment side of the practice and internship training program. She is proud and excited to bring her skills in and passion for psychological assessment back home to Los Angeles.
 
Her areas of clinical focus include psychological testing, sport psychology, performance psychology, anxiety disorders, ADHD and learning disorders, and mood disorders.
 
When she isn’t in the office, she enjoys attending athletic events, spending time with her family and friends, quick trips to Disneyland, and hanging out with our official office mascot, Olive.

Dr. Shauna Marsh is a clinical psychologist with LAPA.  Dr. Marsh earned her doctorate degree in Clinical Psychology from California Lutheran University and completed her pre-doctoral internship with Kern Behavioral Health and Recovery Services.  While her university may be affiliated with a specific religion, Dr. Marsh is welcoming of any and all religious and spiritual backgrounds.
 
She has worked in the clinical setting since 2013 within various sites including community mental health, juvenile justice, elementary and middle schools, and with the Conditional Release Program of Kern County.  Her areas of clinical focus are with children and adolescents, forensic-involved individuals, and psychological assessment.  
 
Dr. Marsh considers herself a lover of coffee, nature, and all living beings.  She is often found geeking out over rare indoor plants and figuring out how to grow tomatoes.  She is passionate about social justice and advocating for those in need. 

Dr. Jon Fledzinskas received his BA in Psychology from California State University, Channel Islands in Camarillo, CA, and then completed both his Masters and Doctorate in Clinical Psychology at California Lutheran University in 2020.

Dr. Fledzinskas has predominantly worked with adolescents and adults at a variety of centers. His formal training while in graduate school found him at several places practicing clinical psychology, including a community counseling clinic, a family medicine center, and an undergraduate college counseling center. He eventually went to Norman, OK in 2019 as part of the inaugural class at the Oklahoma Sport Psychology Consortium, where he worked at two separate sites: Psychological Resources for OU Student-Athletes (PROS) at the University of Oklahoma and Commander Counseling and Wellness. During his internship year, he accrued extensive experience delivering mental skills training, counseling, and psychological testing with many different Division I student-athletes at OU and general population clients in the Norman area. For his post-doctoral training in 2020, he remained working at Commander Counseling and Wellness and continued to provide mental skills training, counseling services, and psychological testing with children, adolescents, and adults in Norman and other surrounding areas.

Dr. Fledzinskas utilizes a client-centered, acceptance-based approach in therapy. He focuses on his clients’ strengths to help them develop a working relationship with their minds and emotions, assisting them in understanding what change they want to create in their lives and to then work toward their goals. Dr. Fledzinskas seeks to empower his clients and guide them in navigating their life’s challenges and help them find meaning and purpose in their daily living.

During his downtime, he enjoys spending time with his partner, family, and friends, playing competitive esports online, playing pick-up basketball, and reading a variety of books involving clinical and sport psychology concepts and ideas!

Kezia Young is a PsyD student at Azusa Pacific University. She received her BA in psychology from Cal State Northridge in 2020 and her MA in clinical psychology from Azusa Pacific University in 2022.

Kezia has experience working with children and adults with a variety of clinical concerns such as anxiety, depression, suicide, ADHD, and grief. She has worked as a therapist and assessment clerk at Azusa Pacific University Community Counseling Center. Kezia also worked at Azusa Unified School District providing therapy to children and adolescents. Kezia has experience working in university settings, including Pepperdine University Counseling Center and the University of La Verne Counseling and Psychological Services.

Kezia enjoys playing badminton, travelling, spending time with her family and friends, and training her Goldendoodle puppy, Mochi, to be a Therapy dog.

Tracy Casarez-Gonzalez is a pre-licensed doctoral student in the PsyD in Clinical Psychology program at Azusa Pacific University. She earned a Master of Arts in Clinical Psychology from Azusa Pacific University in 2024, a Master of Science in Public Health (MPH) from West Coast University in 2019, and a Bachelor of Science in Psychology with a concentration in Biology from the University of La Verne in 2018.

Tracy has experience supporting children, adolescents, adults, and couples navigating a range of emotional and psychological challenges, including ADHD, depression, anxiety, emotional dysregulation, self-esteem and identity concerns, life transitions, grief and loss, and self-injurious behaviors. She has provided therapeutic services at ARC Counseling and Wellness and Azusa Community Counseling Center, where she served diverse populations with compassionate, client-centered care, integrating evidence-based practices to meet each individual’s unique needs.

Outside of her academic and clinical work, Tracy is actively involved in the Food for Life initiative at Kaiser Permanente, where she helps provide meals to families in need throughout San Bernardino County. In her personal time, Tracy enjoys the comfort of home, spending quality time with family and friends, and maintaining her health through daily exercise and intentional self-care.

Arielle Beauvoir is a doctoral student in clinical psychology at the California School of Professional Psychology. She received a Master of Science degree in Athletic Training from Stephen F. Austin State University in 2016 and a Bachelor of Science degree in Kinesiology from California State Polytechnic University, Pomona in 2014.

She integrates a holistic, client-centered approach in her clinical work, incorporating physical activation, mindfulness, and evidence-based therapies. Arielle has advanced training in Cognitive Behavioral Therapy (CBT) and Exposure and Response Prevention (ERP) and has specific interests in trauma-informed care and eating disorder treatment. She has experience with both CBT-E and Radically Open DBT (RO-DBT). Currently, Arielle is completing a year-long training in neuropsychological assessment through UCLA Semel Stuart House and L.A. Psychological Assessment.

In addition to her clinical training, Arielle holds a Master’s degree in Athletic Training and has been a certified Athletic Trainer since 2016, with extensive experience working with collegiate and elite athletes. In her free time she enjoys exploring the city, trying new restaurants, and finding hidden gems along the coast. She is supervised by Dr. Taylor Sorenson, PsyD, HSP.

Olive is LAPA’s official office mascot. She is soft, cuddly, and sweet as pie. Miss Olive has what is called exotropia, which is when one or both of the eyes turn outward (in her case, both), but she embraces her differences and has all the confidence in the world! She is a Maltipoo and is hypoallergenic.