Sharon Ostiguy PMHNP-BC, MS

Sharon Ostiguy, PMHNP-BC, is a dedicated Psychiatric Mental Health Nurse Practitioner based in Congers, New York, currently contracted with Orenda Psychiatry. She provides compassionate, evidence-based care to adults across New York State through a hybrid and remote practice model. Sharon treats a wide range of conditions, including anxiety disorders, major depressive disorder, bipolar disorder, ADHD, personality disorders, and eating disorders. Known for her empathy and patient-centered approach, she is committed to developing individualized treatment plans that support long-term mental wellness.

Sharon began her nursing career in 2004, building a strong clinical foundation in critical care, hospice, and home health. She served for more than a decade as a critical care registered nurse at White Plains Hospital and also worked at Westchester Medical Center, gaining extensive experience in cardiac stepdown, telemetry, CCU, ICU, and float nursing. She later transitioned into leadership as an Extended Hours Hospice Triage Manager with VNA Health Group, where she combined clinical expertise with operational oversight. Her excellence in nursing was recognized with honors including Critical Care Float Nurse of the Year.

Motivated by a passion for both science and caring for others, Sharon earned her Master of Science in Nursing from Pace University, graduating with a 3.98 GPA and induction into Sigma Theta Tau International Honor Society of Nursing. Board-certified through the American Nurses Credentialing Center, she attributes her success to high empathy, resilience, and self-determination. Sharon remains committed to lifelong learning and staying current with innovative, research-driven approaches in psychiatry, ensuring her patients receive thoughtful, comprehensive mental health care.

• BSN from Chamberlain University
• MSN from Case University

• PMHNP-BC
• MSN
• Registered Nurse

• Certificate Of Appreciation Issued by Shewon Erie RN DPS and Mary Sussman RN Clinical manager
• Critical Care Float Nurse of the Year Issued by WPH Vice President Of Nursing

• AANP
• ANCC
• Phi Pi Honor Society of Nursing