Psychologists and Therapists Brookhaven NY

Supporting you through anxiety, depression, trauma, and more.

Take the First Step Today

Ready to talk?

Call 631-804-6937 to get started.

Get to Know Dr. Nissen

Learn more about Dr. Nissen’s background, approach, and credentials.

Integration of

Clinical practice, scientific research, teaching, and professional leadership.

Trauma Therapy

Psychologists and Therapists Brookhaven NY - Trauma can deeply impact the mind and body, leading to the presence of a stress disorder. For those who suffer from stress disorders like posttraumatic stress disorder or acute stress disorder, the thought of life without their symptoms may feel like a fantasy. The truth is, recovery from stress disorders is both possible and common. What does healing look like? It resembles the body’s recovery from many wounds. There may be a psychic scar that remains tender to the touch, and may even feel inflamed at times, but it need not be painful every day. Using proven therapeutic methods grounded in more than a century of scientific research, we help you gently process trauma, release suppressed emotions, and build healthy coping skills. Whether you're dealing with childhood trauma, PTSD, grief, or a recent life event, trauma treatment is personalized to your pace and needs. You don’t have to carry the weight of your past alone. With the right support, healing is not only possible - it's within reach.

Anxiety Therapy

Psychologists and Therapists Brookhaven NY - Living with anxiety can feel overwhelming — like your mind is constantly racing, your body is always tense, and peace is unobtainable. Anxiety and worry can feel terribly uncomfortable, but they can often serve a useful purpose alerting us to feelings that we need to pay attention to. Our approach focuses on identifying the cause of anxiety instead of just managing symptoms. By understanding where anxiety originates, we can end the cycle of panic and worry. Whether you're dealing with social anxiety, panic attacks, generalized anxiety, avoidance, phobia, hypervigilance, or stress-related issues, we’ll work with you at your own pace in a safe, judgment-free environment. You deserve to live a life not ruled by fear or worry. Anxiety therapy offers the support and structure to help you regain control — so you can breathe easier, think clearer, and move forward with confidence.

Person opening up to a mental health professional about depression

Depression Therapy

Psychologists and Therapists Brookhaven NY - Depression can make even the simplest tasks feel heavy, isolating you from the people and activities you once loved. It’s more than just sadness — it can drain your energy, cloud your thinking, and affect every part of your life. But with the right support, healing is possible. Treatment for depression works by helping patients uncover and understand unconscious conflicts, past experiences, and emotional patterns that contribute to their depressive symptoms, fostering insight and emotional growth over time. There are many types of depression and we tailor each treatment to your unique experience and goals. You don’t have to go through this alone. With understanding, guidance, and the right tools, you can take meaningful steps toward a brighter, more fulfilling life.

Relationship Issues

Psychologists and Therapists Brookhaven NY - Relationship issues can leave you feeling hurt, confused, and disconnected — even in partnerships that once felt strong. Miscommunication, unresolved conflicts, or emotional distance can strain the bond you share with others. But with the right support, healing and growth are possible. Therapy for relationship issues helps you understand patterns, improve communication, and rebuild trust and connection. Whether you're navigating a romantic relationship, family conflict, or challenges with friends or coworkers, we tailor each session to your unique situation and goals. You don’t have to face these struggles alone. With guidance and insight, healthier, more fulfilling relationships are within reach.

Reaching out for therapy is a brave step.
If you're ready to start your journey, we're here to help.

Call: 631-804-6937

Available Hours

We offer in-person and virtual appointments evenings and weekends.

Phone

631-804-6937

Address

2500 Nesconset Hwy, Bldg 5D
Stony Brook, NY 11790

Disclaimer

The information provided on this website is intended for general informational and educational purposes only and is not a substitute for professional psychological advice, diagnosis, or treatment. Viewing this website, using the information contained herein, or communicating with the practice via email or contact forms does not establish a psychologist–patient relationship.

If you are experiencing a mental health emergency, do not use this website. Instead, call 911 or go to your nearest emergency room. You can also contact the National Suicide & Crisis Lifeline at 988 for immediate support.

Psychological services are provided only in states where the psychologist is appropriately licensed. While efforts are made to protect your privacy, please be aware that electronic communication (including contact forms and emails) may not be fully secure.

No guarantees are made regarding outcomes or results from psychological services, as each individual’s circumstances and progress will vary.

By using this website, you acknowledge and agree to the terms of this disclaimer.

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