Find a psychiatrist in Amityville, NY — covered by insurance

Hi there, I’m Oscar Oliver Baker, a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP) passionate about helping people feel more balanced, confident, and supported in their daily lives. I work with clients navigating anxiety, depression, ADHD, PTSD, trauma, stress, and burnout. I believe mental health care should feel collaborative, personalized, and judgment-free.

My approach combines thoughtful medication management with supportive therapy and practical coping strategies tailored to your goals and lifestyle. Whether you’re starting treatment for the first time or looking for a provider who truly listens, I strive to create a safe space where you feel comfortable and empowered in your care.

Christina offers medication management, psychiatric evaluations, and computerized ADHD testing in unhurried appointments that allow her patients to feel heard and empowered. Christina is a board-certified psychiatric nurse practitioner with experience with teens, adults, and older adults. She empowers patients to take control of their treatment and their lives. She offers virtual and in person visits.

As your mental health provider here's what I want you to know about me:

• I listen first
• I believe in collaboration
• I treat the whole person
• Medication is a tool, not a requirement.
• There is no shame in seeking help.
• Progress is possible.

Greetings & welcome. As a board certified Psychiatric Mental Health Nurse Practitioner, I offer brief therapy & medication management to adolescents & adults. Medication is not the best fit for everyone & together we can find your path.

I hold a certification in Wellness Counseling from Cornell University & believe that diet, activity and spending time doing what nourishes you, all contribute to healing. Together we can explore your goals & treatment options.

I am approachable and I like to provide a safe space.

I am very dedicated to providing quality service to patients in my care and actively listening to their concerns

I am a board-certified psychiatrist committed to delivering compassionate, evidence-based, and person‐centered care to individuals experiencing a wide range of mental health challenges. My training includes a general psychiatry residency in New Jersey and an advanced Addiction Psychiatry/NIDA‐T32 Research Fellowship at Columbia University in New York City, where I received specialized experience in the treatment of substance use disorders, comorbidity, and academic research.

I have 8 years of nursing experience working with children as young as 6 years and older across inpatient and outpatient settings. Depression, Anxiety, ADHD, ODD, bipolar and psychotic disorders are some of the areas I have expertise in.

I graduated from Hofstra University Nurse Practitioner Program and was recognized for The Academic Excellence Award for outstanding clinical and academic performance.

Life’s challenges can feel overwhelming — whether it’s anxiety, ADHD, school stress, or simply navigating life's ups and downs. Maybe you're feeling stuck in relationships, school, or work and your goal is to feel more balanced, confident, and capable of handling daily challenges while building long-term resilience and growth. Regardless of what you're facing, I'm here to help. I’m Dr. Alex Luna, a Columbia and Cornell trained psychiatrist specializing in the care of adults, children, and adolescents.