Book a therapist or psychiatrist in Flushing, NY covered by Cigna

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.

Does your child or adolescent’s behavior leave you wondering, “What is going on?”Are they having meltdowns, withdrawing, struggling at school, worrying, or feeling sad? Children and adolescents often communicate their feelings through behavior long before they have the words to explain what they are experiencing.I work with children, adolescents, and families navigating challenges such as adoption, divorce, co-parenting, blended-family transitions, grief and loss, school-related worries, family conflict, and the growing push for independence. I help children and caregivers better understand what may be underneath the behavior while strengthening connection, communication, and emotional regulation. I am a Licensed Clinical Social Worker (LCSW) and Registered Play Therapist-Supervisor (RPT-S). I received my Doctorate in Clinical Social Work (DSW) and Master’s in Social Work (MSW) from New York University, and my Bachelor’s of Science in Social Work (BSW) from Cornell University. With more than two decades of clinical experience across inpatient, outpatient, and residential settings.

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.

I am a clinical psychotherapist with almost a decade of experience working with couples and adults who want to better understand themselves, and work towards creating the lives and relationships they crave. I am passionate about helping people reconnect to themselves, their hopes, and their autonomy. I specialize in relational/marital challenges, anxiety, grief, addiction, eating disorders, and trauma.

As an experienced psychotherapist, I believe that an empathic approach creates an environment, in which, trust and curiosity can flourished, facilitating the adjustment to an already difficult process. The relationship between psychotherapist and patient constitutes an important tool, in the understanding of patient's past and present behaviors.

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.

In my practice I work with clients of all backgrounds and age groups; and I have a specialty in adolescence and young adulthood. I enjoy supporting clients as they navigate growing up and becoming adults in this complex world. My approach is grounded in Psychodynamic Theory and the belief that many of our problems are rooted in thinking patterns, behaviors, and emotional responses that we developed early in life. My work is eclectic and collaborative. I draw on many modalities including Cognitive Behavioral Therapy, Trauma Informed Treatment, Family Systems Theory and Motivational Interviewing.

Most importantly, I see the therapeutic process as a collaborative endeavor between client and therapist. The client is the expert on themselves, and the therapist is a partner in their journey of self-exploration. We work together to change habits, behaviors, and thought patterns, that are causing distress, and getting in the way of the client’s goals.

I have a background in the creative arts, and enjoy supporting artists, writers, and actors, as they seek balance in their lives. Also, I have spent many years working in the New York City Schools with children, families, teachers, and administrators, to address individual students’ emotional and behavioral problems that interfere with school performance.