Psychiatric care
Discuss your concerns, symptoms, and goals with a psychiatric nurse practitioner and explore a treatment approach tailored to you.
Psychiatric care · Smithtown, New York
A clearer path
starts with
being heard.
Personalized psychiatric care and medication management in Smithtown, NY, with Matthew Killian, DNP, PMHNP-BC, a board-certified psychiatric mental health nurse practitioner. A thoughtful space to talk, understand your options, and take your next step.
MATTHEW KILLIAN, DNP, PMHNP-BCCARE WITH COMPASSION
In-person appointmentsTelehealth appointmentsSmithtown, Long Island
Care that begins with you
Support for where
you are today.
Mental health concerns can affect your routines, relationships, and sense of well-being. Clarity Psychiatric in Smithtown, NY, offers individualized psychiatric care grounded in listening, education, and collaboration.
Psychiatric medication management
Talk through medication options, questions, and concerns as part of your personalized psychiatric care at our Smithtown, NY, practice. Learn about psychiatric medication management ↗
In-person & telehealth
Meet at our Smithtown office or ask about telehealth appointments. Contact the practice to discuss the right visit format for you.
Areas of care
- Addiction
- Alcohol use
- Anxiety
- Autism
- Bipolar disorder
- Depression
- Emotional disturbance
- Family conflict
- Impulse control disorders
- Life transitions
- Medication management
- ADHD evaluation and treatment
- Mood disorders
- Neurodivergence
- OCD (obsessive-compulsive disorder)
- Psychosis
- Self-harming
- Sleep difficulties and insomnia
- Stress
- Thinking disorders
- Trauma and PTSD (post-traumatic stress disorder)
Additional areas of support
- LGBTQ+ (lesbian, gay, bisexual, transgender, queer, and other identities) mental health
- Men’s issues
- Transgender mental health
- Veterans
Contact the practice to discuss whether its services fit your needs.
Meet your provider
Matthew Killian, DNP, PMHNP-BC
Doctor of Nursing Practice | Board-Certified Psychiatric-Mental Health Nurse Practitioner
DNP (Doctor of Nursing Practice)
PMHNP-BC (Board-Certified Psychiatric-Mental Health Nurse Practitioner)
Listening. Understanding. Working together.
Matthew Killian, DNP, PMHNP-BC, is a board-certified psychiatric mental health nurse practitioner in Smithtown, NY. He brings experience in private psychiatric practice and caring for veterans through the Veterans Health Administration. As a veteran, father, and husband, service to others is an important part of his life.
His approach emphasizes compassion, patient education, and treatment options that reflect each person’s needs.
A place to share your concerns and explore your next step.
Plan your visit
Local care.
A personal connection.
- Find us
- Clarity Psychiatric
308 West Main Street, Suite 208
Smithtown, NY 11787
Get directions ↗ - Office hours
- Monday & Thursday · 5:00–9:00 PM
Other hours may be available by arrangement. - Call the practice
- (516) 418-7299
Before your appointment
How do I schedule an appointment?
Use the booking link to visit Matthew’s Tebra profile, or call the practice to discuss appointment options.
Do you accept insurance?
Clarity Psychiatric is an out-of-network practice. Superbills are available upon request for possible reimbursement. Coverage and reimbursement depend on your insurance plan; check your benefits directly with your insurer.
Are telehealth visits available?
Both in-person and telehealth appointments are offered. Contact the practice to confirm eligibility and availability for your visit.
Who does the practice see?
The practice’s professional profile lists care for teens, adults, and older adults. Call to confirm whether Matthew’s services are appropriate for your needs.
Take your next step
Let’s make room for clarity.
Explore appointment options with Clarity Psychiatric.