Find a psychiatrist in Fullerton, CA — covered by insurance

I'm Sinat Aleje, a board-certified Psychiatric Nurse Practitioner with over ten years of experience in the mental health field. I’ve had the privilege of working with individuals across a variety of clinical settings, which has deepened my understanding of the emotional, psychological, and social challenges people face. I specialize in treating adults and adolescents with anxiety, depression, ADHD, PTSD, OCD, bipolar disorder, and schizoaffective disorder.

Clients often tell me they feel truly seen and heard during our sessions. I strive to create a safe and supportive space where healing can begin, and where clients are empowered to take an active role in their care. I hold a Doctor of Nursing Practice (DNP) and am committed to providing high-quality, evidence-based care that evolves with your journey.

If you're looking for a thoughtful, collaborative partner in your mental health care, I’d be honored to work with you.

Hello, my name is Alexander Valenzuela PMHNP. I specialize in psychiatric medication management and cognitive behavioral talk therapy. If you're struggling with your mental health and realize you want help, you don't have to do it alone. I am looking forward to starting the journey with you to help achieve your best self.

Hello, my name is Sherri Crespin, a board-certified Psychiatric Mental Health Nurse Practitioner passionate about providing integrated care for complex mental health challenges, including personality disorders, PTSD and trauma, substance use disorders, ADHD, depression, anxiety, panic disorders, mood disorders, and bipolar conditions. My practice recognizes these conditions are interconnected in ways requiring specialized understanding.

I chose these specializations because I understand how trauma influences personality development, how ADHD complicates substance use recovery, how symptoms emerge during extreme stress, and how these complex interactions require providers who see the complete picture. Whether you're in recovery while managing other conditions, dealing with personality patterns that developed as survival mechanisms, or navigating multiple diagnoses, I bring the expertise needed for comprehensive care.

My approach emphasizes evidence-based treatments and the healing power of being truly understood. I recognize that seeking help for stigmatized conditions like personality disorders takes tremendous courage, especially after negative experiences with providers. I create a therapeutic space where you can explore your experiences without judgment or shame.

You can expect a thorough assessment, personalized treatment planning, and consistent support throughout our work together. My goal is to help you build resilience, develop effective coping strategies, and thrive in your daily life.

IMPORTANT: For current availability, visit https://mentalhealthpractitioners.com/ or call or text us anytime at 415-968-6515—we make it super easy! Intake forms are required before your first appointment. You can text us your info or email us at [email protected]. Please send us a picture of your insurance information and photo ID!

Mental health has long been treated as the forgotten side of healthcare — and for me, that's exactly why it matters so much. As a Psychiatric Nurse Practitioner serving clients across California through telehealth and in-person care, I specialize in helping people navigate depression, anxiety, and ADD/ADHD. I believe that when mental health struggles go unaddressed, everything else in life suffers — and that healing is not only possible, it's necessary. When I'm not supporting my clients, you'll find me out in nature, getting lost in a good movie, or discovering new music — small reminders of the joy and balance I encourage my clients to find for themselves.

Pleasure to meet you! My name is Iffy, and I was born and raised in Nigeria. After working in a Psych ER for over 22 years, I decided it was time to be able to treat my own patients. I went back to school and graduated from Brandman University in 2019 with my nurse practitioner degree. Four years later, I love what I do and the patients I treat. I truly believe that with the right work, tomorrow is always capable of bringing you a smile.

I know how heavy life can feel when you’re carrying pain, uncertainty, or self-doubt. But I believe, as a wise old wizard once said, “Happiness can be found even in the darkest of places, if one only remembers to turn on the light.” My role is to help you find that light again. I work with Gen Z and Millennial adults facing anxiety, depression, trauma, bipolar disorder, ADHD, and more. Through integrative, culturally responsive care, I combine evidence-based psychiatry with holistic strategies to help you feel heard, supported, and empowered to create a life that aligns with your true self.

I have a bachelor's degree in human services, master's degree in nursing, and am currently licensed as a Psychiatric NP at a psychiatric urgent care, psychiatric inpatient, and psychiatric nursing home. I had been working in mental health field with various roles from crisis mental health coach, psychiatric residential RN, psychiatric emergency and urgent care RN. A majority of my patients have disorder of depression, anxiety, insomnia, bipolar, trauma, and psychosis.

I’m here to make this journey feel gentle, welcoming, and human. I keep things clear and simple so you can focus on what matters, not the overwhelm. My style is warm, encouraging, and a little poetic—because softness helps us breathe. Let’s take this step together, one calm moment at a time.

Child & Adolescent Psychiatrist, 20+ years. Metabolic & functional approach — nutrition, sleep, exercise alongside medication management. Telepsychiatry: CA, AZ, WA, IL, SC. Cancer survivor with personal insight into holistic wellness. Book, insurance & free parent community: https://linktr.ee/carlosbarriosmd.com