Our Team

Gary Fedoroff, LMFT, CAADC ll

Since 2003, Gary Fedoroff has been dedicated to helping adolescents and families throughout Marin County navigate mental health, substance use, and life’s challenges. With more than two decades of experience, he has developed youth programs, provided counseling in schools and Juvenile Drug Court, and worked extensively with teens in outpatient and residential treatment settings.

As the founder of Marin Recovery Solutions, Gary specializes in working with adolescents, young adults, and families using an individualized approach that blends evidence-based therapies, including CBT, DBT, Solution-Focused Therapy, and motivational interviewing, with experiential interventions. Whether in the therapy office, on a hiking trail, or at a skate park, he believes meaningful change happens through authentic connection and engaging experiences.

Gary earned his Master’s degree from Dominican University of California and is a Licensed Marriage and Family Therapist (LMFT) and California Advanced Alcohol and Drug Counselor II (CAADC-II). He lives in Mill Valley with his wife, Ryan, and their two children.

Kori Stevenson, AMFT, APCC

Kori Stevenson, AMFT, APCC is an Associate Marriage and Family Therapist and Associate Professional Clinical Counselor with over 2,500 hours of clinical experience and more than 20 years of personal and professional experience in recovery from substance use disorders. She specializes in helping adolescents, adults, and families navigate challenges related to addiction, mental health, life transitions, and personal growth.

 Kori utilizes evidence-based approaches including Cognitive Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT), and Solution-Focused Therapy to help clients identify their strengths, build resilience, and create lasting, meaningful change. Her therapeutic style is compassionate, collaborative, and focused on empowering clients to achieve their goals.

In addition to her clinical work, Kori volunteers at both the San Quentin Rehabilitation Center and the Marin County Jail, supporting individuals on their recovery and rehabilitation journeys. Outside of the therapy room, she enjoys staying active through fitness and is a passionate fan of the Ohio State Buckeyes.

Alyssa Sontag, AMFT

Alyssa Sontag is a Bay Area Associate Marriage and Family Therapist specializing in adolescents and young adults. She spent two years as a school-based therapist at Tamalpais High School, providing individual therapy, crisis support, and risk assessment while collaborating closely with families, school staff, and outside providers.

Alyssa has extensive experience supporting teens with anxiety, depression, substance use, self-esteem, relationships, identity development, emotional regulation, and life transitions. Drawing from a decade of personal and professional experience in substance use recovery, she brings a warm, relatable, and nonjudgmental approach that helps teens feel understood and comfortable in therapy.

Her approach integrates Humanistic Therapy, CBT, mindfulness, and attachment-based interventions. Alyssa earned her M.S. in Counseling Psychology from Dominican University of California and her B.S. from NYU and is an avid yogi.

Vanessa Welstead, CADC

Vanessa Welstead is a Bay Area-based certified ARISE Interventionist (CAI) who specializes in supporting individuals and their families on their path to recovery from substance abuse. Vanessa began her work in long-term intervention work in 2021. Vanessa is dedicated to creating a professional, safe and supportive environment for her clients and their families to start on their recovery path. She tailors her approach to meet each client’s unique needs, ensuring they feel valued and understood, while adhering to a harm-reduction approach. Deeply passionate about her work and inspired by her family, Vanessa is committed to making a positive, lasting impact in the lives of those she supports.  Vanessa is a graduate of City College of San Francisco’s Addiction & Recovery Counseling Certificate Program. She is the host of “Wherever You Go, There You Are (https://podcasts.apple.com/us/podcast/wherever-you-go-there-you-are/id1596528685)”, a podcast that shares stories of recovery.  She resides in Marin County, California and when not with her husband & three kids, can be found running trails.