Addiction therapists & psychiatrists in Petaluma, CA

I believe the best work happens when you feel comfortable, understood, and supported. My goal is to create a space where you can be yourself—no pressure, no judgment, and no need to have everything figured out before you start. We’ll work together to explore what’s bringing you in, what matters most to you, and what you’d like to change or better understand.

I don’t believe in one-size-fits-all approaches. Each person is different, so our work will be tailored to your needs, your goals, and your pace. Whether you’re feeling stuck, overwhelmed, going through a transition, or simply wanting to better understand yourself, I’m here to help you move forward in a way that feels manageable and authentic.

What I Bring to Our Work

• A welcoming, nonjudgmental space
• Thoughtful listening and honest, compassionate feedback
• A balance of insight and practical tools you can use outside of sessions
• Support that’s personalized to you, not a preset formula

If you’re looking for someone who is easy to talk to, genuinely supportive, and invested in your growth, I’d be glad to work with you and see if we’re a good fit.

A core priority in my work is helping clients reclaim the power of their voice. Therapy is most meaningful as a collaborative process where you are not only heard, but truly attempted to be known. As an Iranian American therapist, I understand the richness and complexity of holding multiple cultural identities. I especially enjoy supporting Highly Sensitive People (HSPs), as well working with teenagers and adults navigating identity formation, relationships, and the often tender process of growing into themselves. There’s room here for deep healing, honest conversations, and the occasional ‘okay, but why is my brain doing THAT?’

IMPORTANT: All clients must complete our intake form and sign our policies before their appointment. Please complete these documents at https://intakeq.com/new/6oakjo/lusjbb or contact us at 602-800-4699 (call or text). Please also email or text us a copy of your photo ID/driver's license at [email protected]

For the most current schedule and openings, please book directly on our website at https://mentalhealthpractitioners.com/book-appointment/ or call us at 415-968-6515.

As a PMHNP-BC who specializes in autism, complex cases, OCD, personality disorders, PTSD/trauma, schizophrenia/psychosis disorders, and substance use, I've built my practice around understanding that every person's mental health journey is unique—especially when multiple conditions interact or when traditional approaches haven't worked.

I also provide comprehensive treatment for depression, anxiety, panic disorders, mood disorders, and bipolar disorder, always with an understanding that these conditions often overlap and influence each other in complex ways. What I want you to know is this: your experiences are valid, your struggles make sense in the context of your life, and there's no such thing as being "too much" for treatment.

Whether you're masking autistic traits, battling compulsive behaviors, managing intense emotions, processing trauma, questioning reality, or struggling with substances, I meet you exactly where you are without trying to force you into a predetermined mold. My approach combines evidence-based treatments with deep respect for your individual needs and experiences.

You deserve a provider who doesn't see complexity as a problem to solve, but as a roadmap to understanding how to best support your unique path to wellness.

I specialize in helping clients navigating trauma, anxiety, panic disorder, depression, LGBTQ+ issues, grief, & much more. I earned my MSW from New York University in 2011 and have worked as a forensic social worker in NYC at The Legal Aid Society & have also worked with Gay Men's Health Crisis, Services for the Underserved, Footsteps & Office of the Appellate Defender. I moved to Los Angeles in 2017 and have been in private practice since 2018.

I use she/her pronouns. I am a child of refugees. I have a Master of Social Work and did my Bachelor of Arts in Asian American Studies with a Minor in Global Health. I have worked with many individuals struggling with a range of challenges including but not limited to depression, anxiety, psychosis, alcohol and substance use/abuse, chronic health challenges such as HIV and diabetes, as well as gender affirming care. In my free time, I enjoy playing a variety of video games, going to live shows, grabbing a bite to eat with loved ones, exploring new areas, and riding my motorcycle.

It's not easy starting therapy and investing time in yourself, but you've already done the first step! My experience has primarily been focused in clients with eating disorders and co-occurring diagnoses. With that said, I also have extensive experience working with relationship challenges, anxiety, self-harm, and suicidality. I generally like to pull from my knowledge of various therapy modalities such as DBT, CBT, FBT and EFFT. I also really enjoy self-compassion work. Your goals are always my top priority, and I am here to support you every step of the way.

Outside of work, I enjoy live music, spending time with friends, and hanging out with my dogs, Nala and Toni. These personal interests help me stay grounded and bring balance to my life, which I believe is crucial for overall well-being.

If you're ready to take the next step, I'm here to help you navigate your journey towards healing and growth. Let's work together to achieve your goals!

I'm invested in helping you find value and joy in your life!

For over the past decade in this field, I have assisted clients at all stages of life. I prefer to show up with humility, humor, and genuine humanity.

Hi, I'm Tandrea Thysell, a California-based Marriage & Family Therapist. I've been providing therapy for most of my life (I think I was born to do this!), but professionally for more than 10 years.