A psychiatric evaluation
An evaluation explores symptoms, when they began, their effects across settings, and medical and mental health history. Questionnaires and relevant records may help inform the assessment.
Clarity Psychiatric · Smithtown, NY
ADHD Evaluation and Treatment in Smithtown, NY
Explore your concerns with Matthew Killian, DNP, PMHNP-BC. Personalized psychiatric appointments are available in Smithtown and by telehealth for eligible patients throughout New York State.
MATTHEW KILLIAN, DNP, PMHNP-BCCARE WITH COMPASSION
In-person in SmithtownEligible patients across New York StatePrivate-pay care
Understanding ADHD
More than an occasional distraction.
Attention-deficit/hyperactivity disorder (ADHD) can involve persistent difficulty with attention, restlessness, or acting impulsively. People may struggle to organize tasks, remember commitments, finish projects, or wait their turn. Not everyone experiences the same symptoms.
Similar difficulties can occur with sleep problems, anxiety, depression, or other conditions. An evaluation helps clarify what may be contributing.
Individualized treatment
Treatment approaches may include medication, psychotherapy, and practical skills for organization and daily routines. Your needs and preferences guide discussion of options and referrals.
Medication management
When clinically appropriate, medication management includes discussing benefits, risks, and side effects, with follow-up to review response and consider adjustments.
An appointment does not guarantee an ADHD diagnosis, a prescription, or a particular medication. Learn more about ADHD from the National Institute of Mental Health ↗
Meet your provider
Matthew Killian, DNP, PMHNP-BC
Doctor of Nursing Practice | Board-Certified Psychiatric-Mental Health Nurse Practitioner
More about Matthew ↗Space to talk. Time to understand.
Matthew’s approach emphasizes listening, compassion, patient education, and collaboration. At Clarity Psychiatric, the conversation begins with your concerns and goals.
For patients exploring ADHD care, the practice offers an opportunity to discuss evaluation and individualized treatment, including psychiatric medication management when clinically appropriate.
Local & virtual appointments
Smithtown care.
New York access.
In-person appointments are available at 308 West Main Street, Suite 208, Smithtown, NY 11787. The office serves patients from Smithtown and surrounding Long Island communities, including St. James, Kings Park, Commack, and Hauppauge.
Virtual psychiatric appointments are available for eligible patients throughout New York State. Contact the practice to confirm visit eligibility and whether telehealth is appropriate for your needs.
Office hours are Monday and Thursday, 5:00–9:00 PM. Other times may be available by arrangement.
Book an Appointment ↗Before you book
Is ADHD care private-pay?
Clarity Psychiatric is currently private-pay. Contact the practice for current appointment fees before scheduling.
Are superbills available?
Superbills are available upon request for possible out-of-network insurance reimbursement. Reimbursement is not guaranteed; eligibility and payment depend on your plan. Ask your insurer about your benefits.
How do I schedule?
Select Book an Appointment to open the existing Tebra scheduling page, or call (516) 418-7299 to discuss appointment options.
Can I discuss other mental health concerns?
Yes. You can share concerns beyond ADHD during your psychiatric appointment. View the practice’s areas of care and contact the office to discuss whether its services fit your needs.
Take your next step
Start a conversation about ADHD.
Explore evaluation and treatment options with Clarity Psychiatric.