About Nassau Guidance & Counseling
Compassionate Support From Our Psychotherapists Through In-Person, Telehealth, Or Counseling Psychology Online
Welcome to Nassau Guidance & Counseling, your trusted partner in therapy and counseling services for Long Island-based counseling psychology online. For over six decades, we have been committed to helping our clients navigate life's challenges and achieve their personal goals.

Meet Our Therapists
Hi, my name is Kathleen Dwyer Blair (LCSW). As the Owner of Nassau Guidance & Counseling and a practicing psychotherapist for the past 30+ years, I know that life can sometimes be overwhelming & painful – so much so, that you feel stuck wondering if sustainable change is simply impossible. Our goal is simple: to help you get unstuck. We match our clients with therapists based on their specific needs, preferences, & therapists' expertise. Whether you need a grief counselor, anxiety therapist, depression counseling, trauma specialist, or relationship therapy, our therapists are here to provide the tools you need to move forward.
Nassau Guidance & Counseling-we're more than just a therapy practice; we're a community dedicated to fostering positive change & growth. Our 27 highly skilled Licensed Clinical Psychologists, Marriage and Family Therapists, Clinical Social Workers, and Mental Health Counselors - most of whom have a minimum of 10 years of post-license experience have helped thousands improve their mental health using the best of traditional psychotherapy & new, emerging modalities.
We proudly offer various treatment approaches, including Cognitive Behavioral Therapy (CBT) ,Dialectical Behavior Therapy (DBT), Acceptance & Commitment Therapy (ACT), Mindfulness, Interpersonal Psychotherapy, Psychodynamic, and more.
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Our Mission
Since 1960, Nassau Guidance & Counseling has offered top-notch psychotherapy treatments to clients in New York State, helping them reach their highest potential. We take the time to get to know you and hand-select a therapist ideal for your unique situation. We match your individual counseling needs with our finest specialists in safe and confidential environments conducive to growth, change, and healing.
What Our Clients Say
Kathleen is by far the most compassionate & knowledgeable professional I have ever worked with. She has saved my life in more ways than words can describe; I am beyond grateful to have her throughout many life experiences.
From the first moment of contact with this outstanding psychotherapy practice, each person is greeted with respect and a caring manner from the well-informed and helpful office staff.
Nassau Guidance & Counseling does a great job providing therapy tailored to your specific needs and goals. They make you feel comfortable so that you get the help that you are looking for.
Long Island Areas We Serve - 27 Private Offices by Appointment Only
Babylon, Bayport, Bellmore, Commack, East Meadow, Garden City, Hicksville, Huntington, Jericho, Levittown, Lynbrook, Manhasset, Massapequa Park, Merrick, Mineola, Oyster Bay, Plainview, Rockville Centre, Ronkonkoma, Roslyn, Smithtown, Syosset, Wantagh, Woodbury
How To Get Matched With A Therapist For Depression, Anxiety, Stress, Grief, Trauma, Abuse, OCD, or Relationship Issues
- Contact Our Team: Use the Contact Us form or call us at (516) 221-9494 to schedule an appointment. Our client care coordinator will reach out via phone within 24 hours or the next business day. If you are in crisis or are in need of immediate help, please call 911 or go to your closest emergency room.
- Personalized Therapist Matching: When our client care coordinator contacts you to discuss your therapy needs, we will ask specific questions designed to match you with the best therapist. We take great pride in our matching techniques, which give our clients better outcomes.
The client care coordinator will ask for information such as your therapy needs and how we can be helpful to you, your location, and if you prefer in-person or remote sessions. Additionally, we will take note of your availability for ongoing weekly sessions. We strive to accommodate your schedule! - Insurance Verification: During the initial phone call, we will collect your insurance plan details. We will then contact your insurance provider to confirm coverage. We accept the following plans: Aetna, Anthem, Cigna, Empire Blue Cross Blue Shield, Fidelis, Medicare, Oscar, Oxford, UMR, and United Healthcare.
Please note, we do not accept 1199, Affinity, Blue Cross Blue Shield Medicaid (JLJ prefix), Emblem Essentials or Emblem HIP, GHI, Healthfirst, Humana, Medicaid, and United Community. - Out-of-Network & Self-Pay Options: If we do not have a good therapy match with an in-network provider, you may have out-of-network benefits. If your insurance is not accepted, but you’re open to going out of network, we’ll share our out of network fees. If you don't have insurance, we offer substantially reduced self-pay rates for consultations and ongoing sessions.
- Therapist Assignment & Scheduling: Once we have verified your insurance and determined the therapist that best matches your needs, we will reach back out to schedule your appointment. If your calendar permits, we will do our very best to schedule your first appointment within one week of your call.