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Shannon Cantillano, LCSW

Hi! I am the Owner and Clinical Director of Inner Expansions. Specializing in psychotherapy for individuals, I'm a Licensed Clinical Social Worker with the Board of Behavioral Sciences. I maintain an office in San Luis Obispo, CA, and Atascadero, CA, offering both in-person and virtual appointments.

I work with a broad spectrum of clients though I consider my specialty to be working with new moms, older teens/young adults and adult women. Among my areas of expertise are trauma and abuse, self-esteem and identity, depression, anxiety, and interpersonal relationship skills.

I am primarily an EMDR (Eye Movement Desensitization and Reprocessing) and IFS (Internal Family Systems) therapist. My therapeutic approach also includes providing support and practical feedback to help clients effectively address personal life challenges from a client-centered perspective. I integrate complementary methodologies and techniques to offer a highly personalized approach tailored to each client. With compassion and understanding, I work with each individual to help them build on their strengths and attain the personal growth they are committed to accomplishing.


I completed my Bachelor’s of Science Degree in Psychology in 2004 at Cal Poly, San Luis Obispo, earning minors in Child Development and Gender Studies. I earned my Master’s of Social Work Degree in 2009 from CSU Fresno with a concentration in Public Mental Health. I continue to take educational course work and I have a genuine love of learning.

License, Certifications & Awards

I became Licensed as a Clinical Social Worker in 2012 after completing 3,200 hours as an Associate Clinical Social Worker under supervision. 

I am working on completing my certification in EMDR. I have completed advanced course work in this methodology and I work closely with an expert consultant.

Additional Training

I completed my basic training in Eye Movement Desensitization and Reprocessing (EMDR) therapy in 2018.

I completed training as a Domestic Violence Crisis Counselor in 2005 as well as a Sexual Assault Crisis Counselor in 2003.

I also became a Certified Psychiatric Rehabilitation Practitioner in 2011.