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Sean Thomas
APRN,PMHNP-BC
Licensed in the state of NY

Accepts new patients
Meet Sean Thomas
Psychiatric Nurse Practitioner and I believe your mental health care is a partnership with you and your provider;
Hi, I'm Sean Thomas, a board-certified Psychiatric Mental Health Nurse Practitioner based in Smithtown, NY. With over a decade of experience in mental health care, I'm committed to helping patients achieve their best mental well-being.
I hold a Master's in Mental Health Psychiatric Nursing from SUNY at Stony Brook and a Bachelor's in Nursing. My background also includes a degree in Psychology. Over the years, I've had the honor of being on the Dean’s List multiple times.
Currently, I work at Mountainside Addiction Treatment Center, where I conduct psychiatric evaluations and manage medications. My role involves working closely with an interdisciplinary team to provide holistic care. At Family Service League, I have provided similar services, focusing on both adolescents and adults struggling with mental health and substance abuse issues.
I'm dedicated to offering personalized care and making a real difference in my patients' lives. Whether it's through evaluations, medication management, or treatment referrals, my goal is to support your journey to better mental health.
I'm here to help, and I look forward to working with you.
I hold a Master's in Mental Health Psychiatric Nursing from SUNY at Stony Brook and a Bachelor's in Nursing. My background also includes a degree in Psychology. Over the years, I've had the honor of being on the Dean’s List multiple times.
Currently, I work at Mountainside Addiction Treatment Center, where I conduct psychiatric evaluations and manage medications. My role involves working closely with an interdisciplinary team to provide holistic care. At Family Service League, I have provided similar services, focusing on both adolescents and adults struggling with mental health and substance abuse issues.
I'm dedicated to offering personalized care and making a real difference in my patients' lives. Whether it's through evaluations, medication management, or treatment referrals, my goal is to support your journey to better mental health.
I'm here to help, and I look forward to working with you.

Accepts new patients
My philosophy
My approach is always evidence based taking into consideration the client's own personal experiences. Clients can expect that I have their best interest in terms of mental health treatment.
My treatment approaches
• Person-Focused
• Cognitive Behavioral Therapy(CBT)
I specialize in treating individuals with:
Adult Psychiatry
I provide professional care to people with the following conditions:
Anxiety
Bipolar disorders
PTSD
ADHD
Insomnia
Depression
Experiences
My education and work experiences
Work

Mountainside Addiction Treatment Center
Psychiatric Mental Health Nurse Practitioner
Jul 2023 - Present
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Family Service League
Psychiatric Nurse Practitioner
May 2020 - Present
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Stony Brook University Outpatient Mental Health
Psychiatric Nurse Practitioner
Mar 2018 - Apr 2020
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Education
SUNY at Stony Brook School of Nursing
Master of Mental Health Psychiatric Nursing
Sep 2009 - May 2012
SUNY at Stony Brook University
Bachelor of Nursing
Sep 2007 - May 2009
Get the support you need with a personalized treatment plan and flexible scheduling online or in person.
Ratings & Reviews
Here is what my patients said about me
98%
of patients said
“I feel better now after the treatment“
83%
of patients said
“I was treated with good care and respect“
93%
of patients said
“I understood the treatment plan“