Care Without Barriers.

Healing Without Limits.

Personalized, judgment-free care for ADHD, anxiety, depression, PTSD, and more.

Everyone is welcome here.

Conditions and Services

Lighthouse specializes in providing comprehensive mental health care for individuals of all ages, with expertise in treating a wide range of conditions.

ADHD

Detailed assessment and evidence-based treatment approaches for attention-deficit/ hyperactivity disorder across all age groups.

Depression & Anxiety

Compassionate care for mood disorders, using both therapeutic interventions and medication management when appropriate.

Mood Disorders

Specialized treatment for bipolar disorder and other mood-related conditions with personalized care plans.

PTSD

Trauma-informed care for post-traumatic stress disorder, creating safe spaces for healing and recovery.

Oscar Castillo. California's premier Nurse Practitioner, PMHNP-BC.

Psychiatric Nurse Practitioner, PMHNP-BC

Meet Your NP

Hello! I’m Oscar, a dedicated and compassionate Psychiatric Mental Health Nurse Practitioner (PMHNP) based in Southern California. With a strong background in mental health, I specialize in caring for individuals of all ages dealing with ADHD, depression, anxiety, mood disorders, and PTSD. I am also proud to support the LGBTQ+ community and undocumented individuals, ensuring that everyone receives the care and respect they deserve.

Un faro de apoyo para todos—servicios también en español.

My Approach to Care

I focus on mental health in a way that works for you. Everyone’s journey is different, so I take the time to understand your experiences and needs. Together, we’ll build simple, practical strategies that help you feel better now and stay strong for the future. Your insights matter, and our work combines what you know about yourself with methods that really work.

LGBTQ+ flag in heart shape. All identities. All journeys. All welcome.

Inclusive and Affirming Care

I am proud to provide specialized, culturally competent care for diverse communities, including:

  • LGBTQ+ Community: I offer affirming care that respects and celebrates your identity, understanding the unique mental health challenges that LGBTQ+ individuals may face.
  • Undocumented Individuals: I provide compassionate, confidential care regardless of immigration status, ensuring everyone receives the respect and quality mental health services they deserve.

Everyone deserves access to mental health care in an environment free from judgment, where their dignity and worth are fully recognized.

What to Expect on Your First Visit

Your first session is a calm, welcoming conversation.
We’ll discuss your concerns, review your history, and develop a personalized plan,  no rush, no judgment.
You’ll leave with a clear path forward and next steps for treatment.

Hear From My Patients

Ready to Begin Your Journey?

A brighter, more balanced future is possible. You don’t have to do it alone. 

Contact LighthouseNP