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!

Ruby White is a PsyD student at Azusa Pacific University. She received a Master of Arts degree in clinical psychology from Azusa Pacific University in 2023, a Master of Science degree in counseling psychology from California Baptist University in 2020, and a Bachelor of Arts degree in psychology from Azusa Pacific University in 2017.

Ruby has experience working with individuals, couples, and families experiencing depression, anxiety, trauma, stress, relational issues, and other concerns. Ruby previously provided therapy services to college students at Azusa Pacific University Counseling Center. She has also worked as a therapist trainee at University of La Verne Counseling and Psychological Services and Pacific Clinics with diverse populations.

Ruby's dissertation focuses on exploring the interconnections among healthcare personnel communication and their impact on a cancer patient's psychological well-being, treatment attitudes, and outcomes. She hopes to enrich the understanding of trauma-informed care and empathetic bedside manner by acknowledging the correlation between psychological well-being and physical recovery within the context of cancer care but also to provide actionable insights for healthcare practitioners, leading to the advancement of cancer care that is comprehensive, sensitive, and attuned to the diverse needs of patients and their families.
Ruby spends her free time traveling, painting, writing, singing, reading, listening to music, being in nature, and connecting with the people she loves.

Jacqueline Baca Miller is a doctoral student at California Lutheran University, specializing in evidence-based treatment for adolescents and adults with mood and anxiety disorders. She is passionate about working with low-income, minority communities where she can participate in providing therapy interventions and assessments in an equitable, culturally considerate, and compassionate way. Her previous clinical training at Ventura County Medical Center provided her with experience in crisis intervention, collaborating on a multidisciplinary care team of professionals, and treating patients across the lifespan within an integrated, primary healthcare setting. Jackie has been trained in Acceptance & Commitment Therapy (ACT) and currently serves as a therapist at the Homeless Patient Aligned Care Team at the VA Sepulveda, where she provides individual and group therapy to homeless veterans.

She received her Bachelor's degree at UC Santa Cruz (UCSC) with a major in Psychology and a minor in Education. Jackie obtained her Master's degree in Clinical Psychology at California Lutheran University before pursuing her doctorate training.

Jackie is from Santa Clarita, where she lives with her husband, Blue Heeler puppy, and two Tuxedo cats. When she isn't studying, she enjoys spending time taking her dog to the park, hiking, swimming, traveling, listening to live music, and spending time with her loved ones.

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.

Chase Keyler received his B.A. in Psychology in 2020 from the University of California Los Angeles (UCLA). He received his M.A. in Psychology in 2021 from Pepperdine University Graduate School of Education and Psychology. He has provided evidence-based therapy (e.g. CBT, DBT) to children, adolescents, and adults with various mental health diagnoses. Chase's research interests consist of evidence-based treatments for mood disorders and development disorders. His dissertation focuses on the impact COVID-19 had on autistic adolescents. Chase is currently attending Pepperdine University where he is a third-year student in the process of earning a PsyD in Clinical Psychology.
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Chase spends his free time at the beach, watching sports, exercising, listening to music, and spending time with family and friends

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.