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Shawn Giammattei


Shawn V. Giammattei, PhD

Clinical Psychologist, PSY 22570

Dr. Shawn Giammattei (he/him) is the founder of Quest Family Therapy and is a licensed family psychologist in Northern California, who specializes in couple and family therapy with a focus on the treatment of gender incongruence in children, adolescents and adults, as well as lesbian, gay, bisexual and transgender couple and family issues.

As a narratively informed, culturally-attuned, psychologist, he works collaboratively with clients to find solutions to the problems that are negatively impacting their lives and relationships.

He provides services in different locations and formats to make therapy more accessible to his clients. He maintains private practice offices in San Francisco and Sonoma County, provides in-home services, Telehealth services throughout the state of California, and gender and relationship coaching both nationally and internationally.

Methods & Approach

His approach to therapy is affirming, trauma-informed, interactive, systemic, and collaborative. He integrates complementary methodologies and techniques to offer a highly personalized experience that is tailored to each client, relationship, or family’s needs.

With compassion and understanding, he works with romantic partners, families, and on occasion individuals to help them build on their strengths and attain the personal growth and interpersonal relationships they are committed to achieving. While his practice is primarily relationship focused, he also helps individuals working through trauma using several therapeutic modalities, including preparation and integration with psychedelic assisted therapies.

Dr. Giammattei is an SOC7 certified gender specialist and mentor for the World Professional Association for Transgender Health and is on faculty for their Global Education Institute. As a gender specialist, he has expertise in gender affirming care and evaluations for children, adolescents, adults, as well as parent counseling, education, & support for families navigating a gender journey. He also specializes in working with lesbian, gay, bisexual and transgender couple and family issues as well as helping partners navigate ENM, poly, and BDSM/kink relationships.

Services Provided

He has extensive training in a variety of effective therapeutic techniques to work with this wide range of emotional and behavioral issues, from family conflicts to debilitating anxiety, depression, and addictions.

Treatment Specializations:

  • Cognitive-Behavioral Therapy
  • Couples/Relationship Counseling (Narrative, Emotionally-Focused, & Gottman Method)
  • Dialectical Behavior Therapy
  • EMDR
  • Family Therapy
  • Gender Health Evaluations & Medical Referrals
  • Internal Family Systems
  • LGBTQ+ Affirmative Therapy
  • Mindfulness Approaches
  • Parent Training & Support
  • Psychedelic Assisted Therapy Integration

He specializes in helping individuals, partners, and families dealing with difficulties arising from:

  • anxiety
  • addiction & recovery
  • child/adolescent behavioral problems
  • eating disorders
  • family conflict
  • gender journeys (youth/couples/families)
  • Infidelity
  • life & work transitions
  • neurodivergence
  • obsessive-compulsive disorder
  • parenting conflicts
  • relationship issues
  • sexuality
  • spirituality
  • and trauma/PTSD

Find more information about Shawn V Giammattei, PhD.

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