Diana Nguyen, PMHNP

Diana Nguyen Psychiatric Mental Health Nurse Practitioner (PMHNP- BC)

Specialization: Psychiatric Nurse Practitioner

Diana Nguyen is a dual board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) and Family Nurse Practitioner (FNP-C) with a deep commitment to providing compassionate, evidence-based mental health care in both outpatient and telehealth settings.

Read More About Diana Nguyen, PMHNP

More About Diana Nguyen, PMHNP

Diana Nguyen is a dual board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) and Family Nurse Practitioner (FNP-C) with a deep commitment to providing compassionate, evidence-based mental health care in both outpatient and telehealth settings. With over three years of clinical experience as a nurse practitioner and an extensive background in critical care nursing, Diana brings a well-rounded and insightful approach to treating diverse patient populations.

She believes that mental and physical health are inextricably linked and practices from a holistic, patient-centered perspective. Diana emphasizes the importance of treating the whole person—mind, body, and spirit—and creates individualized care plans that are aligned with each patient’s values, goals, and lived experience. Her clinical expertise spans psychiatric evaluations, diagnostic assessments, medication management, and lifestyle interventions tailored to support long-term mental wellness.

In addition to traditional psychiatric treatments, Diana has specialized experience in utilizing innovative therapies for treatment-resistant depression, including Spravato (esketamine) and off-label ketamine. She is committed to remaining at the forefront of psychiatric advancements and brings a trauma-informed, empathetic presence to every patient interaction.

Diana’s communication style is warm, clear, and collaborative, empowering patients to take an active role in their treatment journey. Whether working with individuals managing anxiety, depression, PTSD, or complex mood disorders, Diana approaches each encounter with compassion and clinical excellence. Her mission is to support healing, restore balance, and guide patients toward a better quality of life.

Our testimonials

What Our Patients Say

The treatment was so much more comfortable than I thought it would be. I experienced slight discomfort during the first two treatments, but it was smooth sailing from then on!

Greg

Before starting TMS, I was so depressed that I couldn’t eat, sleep or get out of bed. I had stopped doing the things I enjoyed entirely, because I didn’t have the energy or interest. It took a few weeks, but I started to notice myself thinking more positively, and it kept improving from there. Thank you, Dr. Cohen!

Lauren

My depression improved dramatically throughout the course of my TMS treatment. I am finally able to sleep through the night and I am looking forward to living my life again. My entire family noticed the difference in me before I did. TMS changed my life after decades of failed medications and terrible side effects. I finally feel like “me” again.

Ben

Dr. Cohen and his team are so fantastic! They did everything they could to make me feel comfortable, and I started feeling better after the first dose of Ketamine!

Verified Patient

I am so thankful to Dr. Cohen and his team! Thanks to them and the Ketamine treatment, I’m feeling better than I have in years. I was pleasantly surprised that there were no side effects.

Matthew

The suite in which I received the treatment was comfortable and welcoming. I was able to relax during the treatments and each time I left, I felt more at peace.

Jean
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Please book an initial consultation at our NYC office to learn more about our telepsychiatry options. We have four convenient office locations, one located in Midtown Manhattan within Grand Central Station, one in Lower Manhattan located along Wall Street, another office in Greenwich Connecticut, and our fourth and newest office is located in Santa Monica California!

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