Amanda Cassil, PhD

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Dr. Amanda Cassil (she/her) is a Licensed Clinical Psychologist in California (PSY26549), Washington (PY61606784) and Texas (LP40433). She founded STEM Psychological Services out of a passion for working with women, underrepresented groups, and neurodivergent individuals in STEM fields (science, technology, engineering, and math). She has expertise in treating anxiety, depression, burnout, imposter syndrome, past trauma, and chronic illness.

Many people who work with Dr. Cassil identify as high achievers and as Highly Sensitive People. Dr. Cassil values diversity and the multiple roles that individuals must navigate in their occupational, social, and familial settings, and she invites her clients to explore these dimensions within therapy.

Dr. Cassil is the author of The Empowered Highly Sensitive Person and The Self-Care Plan for the Highly Sensitive Person. In her free time, she enjoys spending time in nature, hiking, deep conversations with close friends, and painting.

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Dr. Cassil discovered her passion for working with people in STEM when she worked as a pre-doctoral intern at Caltech in 2011. After graduating, she returned to Caltech to complete her postdoctoral fellowship and later worked as a staff psychologist. She left academia to open her private practice in 2014 and values the freedom to customize care for her clients. She has over a decade of experience working with people in STEM and a deep understanding of unique STEM cultures, such as academia, industry, research, start-ups, medicine, and tech.

Dr. Cassil has also worked in multiple college counseling centers (UC Riverside, Cal State Fullerton, Caltech, and Cal Poly Pomona) as a practicum trainee, intern, and staff psychologist. This background provided extensive experience in working with diverse populations, complex cases, and comprehensive care.

Books by Dr. Cassil