Meet Your NP

Hi, I’m Oscar Castillo. I’m a Psychiatric Mental Health Nurse Practitioner based in Southern California, and my goal is to make mental health care accessible, compassionate, and inclusive for everyone. I work with children, teens, adults, and seniors, supporting those navigating ADHD, depression, anxiety, mood disorders, PTSD, and more.

I’m proud to serve the LGBTQ+ community, undocumented individuals, and anyone who wants a safe, nonjudgmental space to talk about their mental health. My approach is holistic and patient-centered. That means I focus on understanding your unique experiences and needs, so together we can create strategies that not only address immediate concerns but also support long-term well-being.

I draw on evidence-based approaches, including positive psychology, psychodynamic therapy, motivational interviewing, and care for psychotic disorders. I also specialize in sleep challenges, grief and loss, trauma, OCD, bipolar disorder, and transgender care. Whether you’re seeking support for everyday stress or complex mental health challenges, my goal is to help you feel heard, empowered, and supported.

During my time off you can find me caring for my garden, playing with my pets or exploring the outdoors with family and friends. 

I look forward to joining you on your mental health journey, navigating the challenges and celebrating the wins.