Trauma & Anxiety Therapy, NY.

Coverage

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.

Locations We Service

Our practice is built on warmth, trust, and collaboration. We take the time to truly understand your story—past and present—and tailor your therapy experience around what matters most to you. You’ll find a compassionate partner in your growth journey who listens without judgment, supports with empathy, and challenges with care.

Available Hours

We offer in-person appointments at our office in Stony Brook, NY as well as virtual options. Evening and weekend appointments available.

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 through email or website contact forms does not establish a psychologist–patient relationship.

The services described on this website are intended for adults age 18 and older. This website is not directed toward minors and does not knowingly collect personal information from individuals under the age of 18.

This website does not collect, store, or transmit Protected Health Information (PHI) for advertising or marketing purposes. Some third-party services used for website analytics or advertising may receive anonymized website activity data, such as pages visited or general interaction with the site. This data is not linked to personal health information, patient records, or identifiable medical information.

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

Psychological services are provided only in jurisdictions where the psychologist is appropriately licensed to practice.

While reasonable efforts are made to protect your privacy, electronic communications such as email or website contact forms may not be fully secure. You should avoid transmitting sensitive or confidential health information through these methods.

The website owner makes no warranties or representations regarding the accuracy, completeness, reliability, or suitability of the information contained on this website. Use of this website and reliance on any information provided herein is at your own risk.
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