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Hannah Postrel Gallagher
Registered Associate Marriage and Family Therapist #127527
650-701-3040 
Hannah@izzotherapy.com

Hannah's Professional Headshot.JPG

I began my career as an elementary school teacher and later taught middle school English Literature, experiences that deepened my understanding of children’s social-emotional needs and inspired my transition into counseling. I earned my Bachelor’s degree in English from the University of California, Santa Barbara, and my Master’s in Clinical Mental Health Counseling from Palo Alto University.

I work well with children, teens, and families going through challenges such as anxiety, depression, school stress, identity development, and the impact of chronic illness or grief. My approach is warm, collaborative, and trauma-informed. I often use Cognitive Behavioral Therapy (CBT) to help kids recognize and challenge unhelpful thoughts and Acceptance and Commitment Therapy (ACT) to help them connect to their values and take steps toward goals even when big feelings arise. Play-based and creative modalities are central to my work with younger clients, helping them feel safe and understood.

 

In my spare time, I love to explore the outdoors, travel, and spend time trying new restaurants with family and friends. I find joy in music so you'll often find me singing and poorly playing the guitar. I also enjoy reading novels, cooking, and savoring that first sip of coffee in the morning!

 

Fun Fact about me: I grew up in a town of a whopping 440 people!

Supervised by Gina Mazzetti | Licensed Marriage and Family Therapist #135698

Goals

From first conversations to lasting change, Izzo Therapy has walked beside 29,679 clients in 2025, guiding families and individuals toward healing, connection, and growth.

Community

Each week, more than 800 families across the Bay Area turn to Izzo for mental health care they can count on. Whether it’s therapy for anxiety, parenting support, or co-parenting counseling, we’re here to help.

Local

We’re proud to be a local practice built by therapists who live and work in the communities we serve—from San Mateo to San Carlos and beyond.

Trust

At Izzo Therapy, inclusivity isn’t just a value—it’s a practice. Our clinicians reflect the diversity of our clients and provide culturally responsive therapy in both English and Spanish.

3130 La Selva Street, San Mateo, CA 94403

and 

10 El Camino Real, San Carlos, CA 94070

Monday - Friday: 8am - 8pm 

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© 2025  Anna Izzo, LMFT  #119172 

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