Book a therapist or psychiatrist in Staten Island, NY covered by Aetna

Hi, I'm Jean-Jeffrey Marcellus, DNP, PMHNP-BC, AGNP-BC, a board-certified Psychiatric Mental Health Nurse Practitioner with over 19 years of healthcare experience. I provide compassionate, evidence-based care for adults experiencing ADHD, anxiety, depression, insomnia, and substance use disorders.

I specialize in Medication-Assisted Treatment (MAT) for alcohol, opioid, benzodiazepine, kratom, and prescription medication dependence. My approach is collaborative and personalized, focusing on creating treatment plans that support each individual's goals, recovery, and overall well-being.

I offer both in-person and telehealth appointments, providing a welcoming, judgment-free environment where patients feel heard, respected, and empowered. I am committed to delivering culturally responsive care and making high-quality mental health services accessible to individuals from diverse backgrounds.

Therapy is a collaborative process, and a strong therapeutic relationship is key to meaningful progress and lasting change. My approach is grounded in a strengths-based, client-centered perspective that supports each person’s capacity for growth and self-understanding. I strive to create a supportive, compassionate, and nonjudgmental space where you can openly explore your thoughts, emotions, and experiences at a pace that feels comfortable for you. Whether you are navigating life transitions, managing stress, or seeking greater self-awareness, therapy can provide a space for reflection, healing, and meaningful change.

Reaching out is hard, especially if you've already tried therapy before and it didn't quite get you where you needed to go. I want you to know that doesn't mean something's wrong with you, it usually just means the approach wasn't the right fit. I've spent over a decade working with people carrying trauma and addiction, adults and teens both, and what I care about most is helping you feel truly understood, maybe for the first time, before we even get to the work of healing.

I’m a formerly harsh self-critic and PhD psychologist with 30+ years of experience. I blend Cognitive Behavioral Therapy and Mindful Self-Compassion. If you struggle with depression, anxiety, low self-esteem or relationship problems, I’m here to help.

Through therapy, you'll learn to stop judging yourself so harshly, let go of guilt, shame and blame, and treat yourself with the same kindness you show others. I help you believe in yourself and take action, even when you’re feeling anxious.

It's very difficult to be in stressful situations that can cause lots of anxiety and self-doubt. Perhaps you're looking for something more than advice from family and friends. If you're looking for a warm and inviting counseling atmosphere, I am eager to work with you to develop effective coping skills and a greater self-awareness to reach your full potential. Together, you and I can work to set goals that are appropriate and attainable for you, at your pace. For therapy to be effective for you, I work hard to build genuine and long lasting trust.

I have experience working with clients who have suffered from anxiety, depression, and marital issues. Additionally, I believe that cultural factors are critical to the way we navigate through life. I work hard to address cultural matters, to understand how these may impact our perception of the world.

Call me for a free consultation where we can discuss your needs and goals. For your convenience, I offer online counseling. También, ofrezco servicios en español. Llamame para discutir tus metas.

I believe prioritizing mental health is key to stability in life. I know there is a better world out there and people need the tools to connect with their upmost insight for mental well being. In this field I am always eager to research and find healing processes to tailor the need of each individual.