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Justin Castello, PhD
Licensed Psychologist
Pronouns: he/him/his
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Justin Castello, PhD, is a Licensed Clinical Psychologist within UHS Social Services where he's served Berkeley students since 2016. He provides individual and group counseling on alcohol and other drug use and related mental health concerns from a Harm Reduction Therapy perspective. He also supports students who have survived trauma including sexual violence, intimate partner violence, and stalking and harassment, as well as those who have caused related harm. Justin's work with Berkeley students is very client-centered, tailored to their needs, collaborative, and respects their self-determination.
Before joining UHS, Justin was the program/intake coordinator and a harm reduction psychotherapist at The Harm Reduction Therapy Center (a nonprofit with community programs and private practices in the SF Bay Area) for 8 ½ years. He's provided therapy (individual, couples, family, and group) in many settings including The Homeless Youth Alliance for transitional aged youth in the SF Haight, E.C. Reems K-8 Charter School in East Oakland, Hospitality House/a community program in the SF Tenderloin, and Pretrial Diversion of SF County. Justin has also provided therapy for people in a locked acute mental illness facility, a social rehabilitation home, and in SF and East Bay private practice offices. He's presented workshops and trainings on Harm Reduction and Harm Reduction Therapy Alcohol and Other Drugs Group facilitation and has over 15 years of experience in the field.
Clinical Interests: Harm reduction therapy, alcohol and other drugs counseling, trauma counseling, couples and family counseling, multicultural/intersecting identity issues, and LGBTQ+ issues.
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Maayan Greene, LCSW
Licensed Clinical Social Worker
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Maayan Greene joined the UHS SOS team in 2013. She received her MSW from UC Berkeley. Maayan also currently works in private practice and at UCSF Benioff Children's Hospital as a psychiatric social worker. She enjoys swimming and hiking in her spare time.
Clinical Interests: Eating disorders, trauma issues, healthy relationships, identity development, mindfulness practices (including MBCT and DBT techniques), depression and anxiety, and wellness and self-care.
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Tiffany Hsiang Lin, LCSW
Licensed Clinical Social Worker
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Tiffany Hsiang Lin first joined UC Berkeley as a student, receiving her BA in Ethnic Studies and Sociology. She then went on to earn her masters degrees in Social Work at Columbia University and Social Science at the University of Chicago. Tiffany returned to UC Berkeley in 2015 as the first dedicated Confidential Advocate at the PATH to Care Center. She's also part of the UHS Transgender Care Team. In her spare time, Tiffany enjoys knitting, cooking, jigsaw puzzles, and video/board games.
Clinical interests: trauma (EMDR trained), sexual/intimate partner violence, LGBTQ care, vicarious trauma and burnout, identity development, family systems, social justice, and multicultural/intersectional counseling.
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Shanta Jambotkar, LCSW
Licensed Clinical Social Worker
Pronouns: she/they
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Shanta Jambotkar, LCSW, has worked at UHS Social Services since 2016. She self-identifies as a South Asian American, queer, cis-woman of color. Her social work education at the University of Michigan is blended with clinical training about body, mind, and spirit healing after trauma. Shanta is a social worker, psychotherapist, educator, and organizational consultant. A primary focus of her practice is to decolonize wellness by creating community and accessibility to healing for BIPOC. Her services are holistic, cultural, and indigenous informed to support communities experiencing intersectionality, and queer and trans people enduring adversity. Shanta is honored to witness and support students to access material resources, build self-awareness and insight, and find pathways toward calm, purpose, and joy.
Clinical Interests: Healing after trauma, EMDR treatment, sexual violence and intimate partner violence survivorship, health conditions, LGBTQI, non-binary, and BIPOC women, immigrant, and next-generation SSWANA communities.
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Laurel Marks, LCSW
Licensed Clinical Social Worker
Pronouns: She/her/her
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Laurel Marks, LCSW, grew up in the Bay Area and Sierra Nevada mountains. She earned a Bachelor’s in literature, creative writing, and dance from UC Santa Cruz and then journeyed around the world training educators and leading experiential education expeditions in Nepal, India and the Amazon Jungle. These experiences, as well as her roles as a naturalist across California and gap year internship coordinator, shaped her career. Inspired by these experiences, Laurel pursued a Master’s in Social Work at San Diego State University, where she conducted research on the impacts of social media and screen use on social emotional development and mental health.
After graduation, she supported teens and young adults through a family systems lens, offering experiential therapy to clients throughout the Bay Area. Most recently, Laurel served as a general and academic counselor at Los Medanos College, helping students navigate their academic and personal journeys. Laurel uses a client-centered approach, bringing her international experiences and background working in higher education to support the diverse students at University Village.
As a therapist, Laurel works from a strengths-based, client-centered model, helping clients discover their inner resilience and foster transformative relationships with friends, family, community, and themselves. In her spare time, Laurel enjoys hiking with her sweet rescue dog Stella Luna, reading, camping, and drinking a delicious smoothie in the sunshine somewhere beautiful.
Clinical Interests: family systems, positive psychology, LGBTQ+ and gender-affirming care, mindfulness and meditation, communication and healthy relationships, restorative justice, community building, and intersections of identity.
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Raquel Castellanos Miller, LCSW
Assistant Director of Social Services
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Erin O'Connor, LCSW
Licensed Clinical Social Worker
Pronouns: she/her/hers
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Erin O’Connor, LCSW, joined UHS in 2020 as a Trauma and Health Concerns Clinical Social Worker. She previously worked as an outpatient therapist and trauma specialist at a community non-profit in Michigan. Erin’s educational background is in psychology and clinical social work and she deeply values holistic healing that centers the mind-body connection, affirms our intersecting identities, and acknowledges the impacts of oppressive systems on individual and collective wellness.
Erin is nationally certified in Trauma-Focused Cognitive Behavioral Therapy (TF-CBT) and the Trauma-Conscious Yoga Method (TCYM) and is trained in Mindfulness-Based Cognitive Therapy (MBCT) and Body Trust. She is also an Accredited Certified Practitioner of Emotional Freedom Techniques (EFT Tapping), trauma-informed practices that integrate acupressure with elements of psychology and neurobiology to reduce the emotional and somatic impacts of stress.
Erin has traveled to five continents and enjoys yoga, hiking, writing, playing board games, and sharing home-baked desserts with loved ones.
Clinical Interests: Trauma, sexual and relationship violence, mindfulness, mind-body healing, chronic illness, body image & Body Trust, disordered eating, EFT Tapping, Muslim mental health, decolonized frameworks for wellness.
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Robin Walley, LCSW
Licensed Clinical Social Worker
Interim Post-MSW Fellowship Coordinator
Pronouns: she/her/hers
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Robin Walley, LCSW, joined the Social Services team in 2003. She received her MSW from UC Berkeley and her BA in Psychology from Pomona College. As the alcohol and other drug counseling team lead, Robin has been a steadfast advocate for a cross-UHS harm reduction orientation and motivational interviewing-informed practice, which has impacted the language used at UHS to talk about alcohol and other drugs, the services provided to students, and how UHS collaborates with campus and community partners.
Clinical Interests: Alcohol and other drugs counseling, harm reduction, motivational interviewing, LGBTQ+ experiences, polyamory and consensual non-monogamy, kink/BDSM, self-injury, sexual and racial identity development, and identity intersectionality.
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Hez Wollin, LCSW
Licensed Clinical Social Worker
Pronouns: they/them/theirs
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Hez Wollin LCSW joined Social Services and focuses on AOD and Trauma. Hez received their MSW from Smith College School for Social Work. Hez is also in the process of becoming a Somatic Experiencing Practitioner. They have many years of experience working with LGB and transgender communities and have led trainings on providing gender-affirming care for mental health providers. Hez was formerly an adjunct instructor at the University of Washington School of Social Work and a clinician at UCSF Alliance Health Project. Hez aims to provide trauma-informed, holistic, embodied support while holding a decolonizing lens.
Clinical Interests: relational-cultural therapy, healing from PTSD and complex trauma, attachment, somatics, LGBTQ+ and gender-affirming care, perinatal mental health, undocumented communities, harm reduction, intersections of identity, and mental health/substance use. In their spare time, Hez enjoys reading fiction, making pottery, riding their bike, and running around after their toddler.
Additional languages spoken: Spanish
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