Find a therapist in Jamaica, NY — covered by insurance

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.

Do you notice patterns of behaviors that you are unsatisfied with? Therapy is a significant step towards working through and facing life's most difficult challenges. I have worked with adults, adolescents and children treating issues of adjustment, self-doubt, mood swings, trauma and anxiety attacks. When you approach the therapeutic process with curiosity, you can grow, heal, and thrive.

Hello and welcome! I work with individuals and couples experiencing relationship transitions. I work in-person on Tuesdays in Ridgewood and virtually Monday-Thursday, 10-6. I currently have mid-day in person and virtual availability.

I believe relationships-both with the self and with others- are worth working on. I have been a practicing social worker for over a decade and have focused on psychotherapy for the last five years. In addition to training in social work and psychotherapy, I have a Certificate in Couple Therapy from Akerman Institute and have completed over 60-hours of training in the Understanding Model of mediation. I have extensive training on modalities for treating anxiety, OCD, and depression.

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.

Each client is an individual which requires not a one size fits all treatment approach. I have over 10 years of prescribing experience in inpatient and outpatient settings and understand that not every person requires the same treatment plan. I also provide MAT, ie, suboxone, vivitrol, naltrexone for Opioid Use Disorder and Alcohol Use Disorder in a non judgmental private setting.

I also treat all anxiety disorders, mood disorders, ADHD/ASD and am understanding of neurodivergence in treatment as well. I have a vast understanding of psychopharmacology and incorporate that into each appointment to help provide the best care possible for each patient. I can help deprescribe if you choose to as well. Not every patient needs to continue medications if they choose not to.

As a clinical psychologist, I assist patients in reshaping negative thought and behavior patterns in a judgement free setting.

What if improving your relationships isn’t starting together, but starting with you? As a Marriage and Family Therapist (LMFT), I work with individuals who are curious about their relationship patterns and ready to create meaningful change from the inside out. You may feel stuck in recurring dynamics, find yourself questioning how your family background shapes your relationships, or want to communicate more effectively. Together, we create a space to gain clarity, better understand what’s driving these patterns, and begin making intentional shifts toward healthier, more balanced relationships.