WHO IS GRANITE STATE BEHAVIORAL HEALTH?
At Granite State Behavioral Health (GSBH), we believe that mental health care should be accessible, compassionate, and tailored to each individual. Our team is dedicated to providing high-quality psychiatric care, including psychiatric evaluations and medication management for a wide range of mental health conditions. We serve adolescents, young adults, and adults, ensuring that individuals across all stages of life receive the support they need.
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Whether you're struggling with ADHD, anxiety, depression, PTSD, or other mental health concerns, we are here to help. Through affordable, flexible care options, including in-person and telehealth appointments, GSBH is committed to breaking barriers and making mental wellness achievable for all.

MEET THE FOUNDER
Matthew Hersey, MSN, APRN, PMHNP-BC, EMT-P
Matthew, is a dedicated and experienced Board-Certified Psychiatric Mental Health Nurse Practitioner with a background as a Paramedic and Critical Care Nurse. His lifelong commitment to caring for others has shaped his mission: to provide compassionate, accessible, and high-quality mental health care to those who need it most.
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Granite State Behavioral Health was founded with a clear and compassionate vision—to make exceptional mental health care easily accessible for individuals and families across New Hampshire. Understanding the increasing need for reliable and personalized support, Matthew and his team have created a welcoming space where people feel safe, heard, and supported.
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At GSBH, we are breaking down barriers to mental health treatment by prioritizing:
✔ Flexible scheduling to fit your lifestyle
✔ Telehealth & in-person visits for convenience
✔ Expert care for ADHD, anxiety, depression, PTSD, and more
✔ Collaborations with local providers for comprehensive support
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Seeking mental health care should feel empowering—not overwhelming. At Granite State Behavioral Health, we’re building a stronger, healthier community where mental well-being is a priority.
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Your mental health matters. We’re here to help.