Bipolar disorder therapists & psychiatrists in Fullerton, CA

I grew up in a small town in Hawaii, then came to Southern California and began studying psychology in 2001. I completed my master’s degree at Fuller School of Psychology in 2010 and served children and families at a community mental health agency for 10 years, also starting a private practice in 2015. While I loved island life, I’ve put down roots here through friendships, involvement in my community, and my love of LA’s cultural diversity.

I’m David Cao, a board-certified Psychiatric Mental Health Nurse Practitioner providing online psychiatric evaluation and medication management for adults throughout California. I especially enjoy working with young adults dealing with anxiety, depression, stress, burnout, overthinking, feeling overwhelmed, or feeling mentally stuck.

If reaching out for psychiatric care feels intimidating, my goal is to make the process feel more approachable. My style is calm, laid-back, straightforward, and collaborative, with a focus on creating a low-pressure, nonjudgmental space where you can talk openly about what’s been going on.

I have over 7 years of experience in mental health care and understand how difficult it can be to manage work, school, relationships, and everyday responsibilities while also struggling with your mental health.

During our appointments, we’ll take time to understand your concerns, discuss whether medication may be helpful, and review your options in clear, straightforward language. Medication is never pressured or guaranteed. When appropriate, we’ll discuss potential benefits, risks, alternatives, and what you can realistically expect.

My goal is for you to leave each appointment feeling heard, informed, and confident about the next step, rather than judged, rushed, or overwhelmed.

I believe that in order for therapy to be effective, the client has to participate in the process. I am not a magician. I don't have a magic wand. Changing old behaviors and patterns can be difficult and painful but i am willing to be there to support you on your journey to better health.

With over three decades of hands-on clinical and nursing leadership experience, I am a Doctorally prepared and Board-Certified Psychiatric Mental Health Nurse Practitioner. My professional journey has been devoted to helping individuals overcome emotional distress, regain control of their lives, and achieve mental and physical well-being.

With certification as a Psychiatric Mental Health Nurse Practitioner and a Doctorate in Healthcare Administration, I bring a holistic, integrative perspective to mental health. My practice philosophy blends evidence-based psychiatric medicine with empathy, respect, and patient collaboration. Healing begins with understanding, and I take time to listen, educate, and partner with my patients to develop individualized, sustainable treatment plans.

Dr. Adatsi has a clear mission: to provide comprehensive care that not only alleviates symptoms but also enhances quality of life, restores confidence, and promotes resilience. His commitment to your well-being is unwavering.

Whether you’re navigating life transitions, managing chronic stress, or seeking clarity amid emotional challenges, I’m here to guide you toward balance, stability, and renewed hope.

Specialties:

• Anxiety and Panic Disorders
• Depression and Mood Disorders
• ADHD (Adult and Adolescent)
• Trauma and PTSD
• Bipolar Disorders
• Sleep Disorders

With over 15 years of experience, I have helped countless individuals navigate the challenges they face and find peace within themselves. Together, we can work towards culminating a healthier and more fulfilling future.

When I am not working I enjoy spending time with my dogs, hiking with friends, cooking, and making flower arrangements. I also enjoy spending time doing artsy activities or attending local events.

I specialize in working with adolescents, young adults, and high performers—including Division I athletes, professionals, and anyone striving to meet high expectations. In my work, I’ve learned that growth happens at the edge of comfort—where support and challenge meet. My clients often tell me they appreciate my ability to be both direct and deeply compassionate, creating a space where they feel seen, understood, and encouraged to move forward.

Born in Taiwan, raised in Southern California, and trained in San Francisco and New Mexico, I bring a blend of cultural humility, life experience, and professional training into every session. As an Asian American therapist, I value identity, culture, and lived experience as essential pieces of healing. I aim to create a space where you can show up as your real self—without judgment, without masks.

I'm an open minded individual and welcome any topics in treatment

Life can feel overwhelming when you’re dealing with trauma, anxiety, depression, or relationship challenges. You may feel stuck in patterns that are hard to break or unsure how to move forward. Therapy can be a space where you begin to understand what’s been holding you back and start creating meaningful change.

I’m a licensed marriage and family therapist with experience supporting individuals, couples, and families through a wide range of emotional and relational challenges. My work focuses on helping you build emotional awareness, improve communication, and develop healthier patterns so you can feel more balanced and fulfilled in your life. Clients should expect to feel heard and supported throughout our time together. I want my clients to feel safe and empowered during their time with me, and I feel privileged to help my clients achieve their goals and improve their lives.

I work collaboratively with clients to help them better understand themselves, heal from difficult experiences, and create more fulfilling lives. Along the way, I offer both support and thoughtful challenge to help clients move beyond patterns that may be keeping them stuck.