About The Provider

Welcome!

       I'm Marsha Desrosiers, a dedicated board-certified psychiatric nurse practitioner (PMHNP-BC) with over 15 years of experience providing compassionate mental health care. As a New Yorker, I've had the privilege of working with a diverse population, fostering a deep understanding of the unique challenges faced by individuals from all walks of life.

       After graduating from high school, I attended St. Joseph's College in Brooklyn, where I earned a Bachelor of Arts in Psychology. I completed a Bachelor of Science in Nursing at Adelphi University and later obtained a Master of Science in Nursing with a specialization in psychiatric mental health from Molloy University.

    As a PMHNP-BC, I specialize in providing comprehensive mental health care to patients across the lifespan. My expertise lies in developing personalized treatment plans that address a wide range of mental health conditions, including anxiety, depression, ADHD, personality disorders, mood disorders, bipolar disorder, schizophrenia, and more. Treatment planning is grounded in current psychiatric research and individualized risk assessment. In select cases and only when clinically indicated, broader pharmacologic considerations may be discussed as part of a comprehensive treatment approach and in accordance with New York State regulations. I utilize evidence-based therapeutic approaches such as Cognitive Behavioral Therapy (CBT) and Solution-Focused Therapy (SFT) to empower individuals to overcome challenges and achieve lasting mental health.

       From my early days as a secretary in psychiatry to becoming a nurse practitioner, I've gained invaluable insights into the complexities of mental health. The COVID-19 pandemic underscored the urgent need for accessible mental healthcare, and fueled by my passion for helping individuals reach their full potential, I founded Blackstone Psychiatry.

       By choosing Blackstone Psychiatry, you're choosing a partner committed to your mental health journey. We're here to support you every step of the way, helping you discover your inner strength and resilience, like a precious gem unearthed.