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Our Providers

Taylor Sorenson PsyD HSP Clinical & Sports PsychologistTaylor Sorenson PsyD HSP Clinical & Sports Psychologist
OK License #1339
CA License #31900

Taylor Sorenson, PsyD, HSP

Licensed Clinical & Sport Psychologist
Pronouns: She/Her/Hers
Oklahoma Insurance Accepted: BCBS, Healthchoice, Aetna, Coventry, Soonercare, Cigna, ​United Healthcare
California Insurance Accepted: United Healthcare, Optum, Cigna
Dr. Taylor Sorenson is a Clinical & Sport Psychologist and is the founder of both Advantage Psychology and Mental Performance Center & L.A. Psychological Assessment. She received her doctoral degree in Clinical Psychology from California Lutheran University and completed her doctoral internship at the University of Oklahoma. While at the University of Oklahoma she received training in their athletic department’s, Psychological Resources for OU Student-Athletes. She completed her post-doctoral training at a private practice in Norman, Oklahoma, under the supervision of Dr. Cody Commander. Within a year she became the Clinic Director of the practice where she oversaw the site's doctoral interns through the internship training program (Oklahoma Sport Psychology Consortium), worked with individual sport and performance clients and managed the psychological assessment side of the practice. She is proud and excited to bring her skills in and passion for psychological assessment and sport and performance psychology 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. She has experience working with athletes ranging in age and ability level from elementary school athletes to elite level athletes.
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.
Sonali Wason PsyD Child PsychologistSonali Wason PsyD Child Psychologist
CA License #32935​​​​​​​

Sonali Wason, PsyD

Licensed Clinical & Sport Psychologist

Pronouns: She/Her/Hers
Dr. Sonali Wason will be practicing under the supervision of Dr. Taylor Sorenson at Advantage PMPC while in pursuit of completing requirements for licensure as a clinical psychologist in the state of California and certification as a mental performance consultant (CMPC).
She received her Bachelor of Arts degree in Psychology from Stony Brook University in Stony Brook, New York, where she also served as a peer mental health educator. She completed her Masters and Doctorate in Clinical Psychology, with an emphasis on Family Psychology from the APA-Accredited program at Azusa Pacific University in Azusa, California.
Dr. Wason has extensive experience working with college-aged individuals and young adults, and has received specialized training in trauma recovery with abuse, assault, community violence, racial trauma, and war/political violence. Dr. Wason has additionally received training in sport psychology to work with high-school, collegiate and professional athletes in areas related to sport performance, performance anxiety, team/coach consultation, and improving team culture.
She has previously served in community mental health clinics, college counseling centers, and athletic departments, including California State University, San Bernardino, University of Oklahoma, University of Oklahoma (OU) Athletics, California Lutheran University, and University of Southern California (USC) Athletics.
Dr. Wason’s therapeutic approach is grounded in multicultural humility, sociopolitical awareness, and evidence-based practices. Her clinical and research interests include: rape culture, trauma recovery, identity, family-of-origin concerns, sport psychology, recovering from an athletic injury, performance enhancement, creating healthy team dynamics, transition out of sport, and providing therapeutic services to people of color.

When she isn’t in the office, she enjoys being active, spending time with friends and family, crafting, and relaxing poolside!
CA License #31934

Shauna Marsh, PsyD, HSP

Licensed Clinical Psychologist
Health Service Psychologist

Pronouns: She/Her/Hers
California Insurance Accepted: United Healthcare, Optum
Dr. Shauna Marsh is a clinical psychologist with Advantage PMPC.  She 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 those within the legal system.  Her areas of clinical focus are with children and adolescents, forensic-involved individuals, specifically utilizing Cognitive Behavioral Therapy (CBT), Dialectical Behavioral Therapy (DBT), and Acceptance Commitment Therapy (ACT) skills and modalities.  Additionally, she maintains a lens of being trauma-informed, culturally sensitive, and identity-affirming.  Dr. Marsh has extensive experience working with a variety of symptoms, including: rapid mood changes, emotional sensitivity, concentration/attention concerns, anxiety, depression, self-harming behaviors, obsessive thinking, and impulsivity. 
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.
Jon Fledzinskas Psychological Assistant ​​​​​​​Jon Fledzinskas Psychological Assistant ​​​​​​​

Jon Fledzinskas, PsyD

Psychological Assistant ​​​​​​​
Pronouns: He/His​​​​​​​
Dr. Jon Fledzinskas will be practicing under the supervision of Dr. Taylor Sorenson at Advantage PMPC while in pursuit of completing requirements for licensure.
He 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.
Dr. Fledzinskas has predominantly worked with adolescents and adults within different centers of care. His formal clinical training while in graduate school found him at several places of practicing clinical psychology, including a community counseling clinic, a family medicine center, 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 within 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, clinical counseling, and psychological testing to a variety of Division I student-athletes 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 to children, adolescents, and adults in Norman and other surrounding areas. During that time, Dr. Fledzinskas also began developing his current eSports psychology project, TopTierMind.gg, in which he is seeking to provide mental skills training and high-performance psychological services to eSports players at the level of amateur to elite competition.

Dr. Fledzinskas utilizes a client-centered, acceptance-based approach. He utilizes his clients’ strengths to help them develop a working relationship with their minds and emotions and helps them understand what change they want to create in their lives and work toward their goals. Dr. Fledzinskas seeks to empower his clients and assist them in navigating their life’s challenges and help them find meaning and purpose in their daily living. For his clients seeking sport and performance psychological services, he employs the use of multiple principles and methods observed in sport psychology, including goal-setting, maintaining confidence, team-building and conflict management, emotional regulation, and improving mindset and self-talk.
Olive Therapy Dog in Training for Psychological SupportOlive Therapy Dog in Training for Psychological Support


Office Mascot, Therapy Dog in Training
Olive is Advantage Psychology & Mental Performance Center’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.