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Leadership Bios

Leslie Hassan-Seidman, MSN, APRN, NP-C, CHA

Leads clinical operations across the North Care Region, supporting high-quality care for patients and families.

Leslie joined By the Bay Health in 2010, serving in direct care, management, and leadership roles before becoming Interim Chief Operating Officer in 2024. She is a certified Adult-Gerontological Nurse Practitioner by training and received her Master’s degree in Nursing from The University of Massachusetts. She holds Bachelor’s degrees in Nursing and Sociology from Syracuse University and Hobart and William Smith Colleges, respectively.

As Interim COO, Leslie oversees our community, home and inpatient hospice teams, our volunteer and bereavement programs as well as our intake and admissions department.

Leslie began her nursing career as a thoracic surgical nurse at Massachusetts General Hospital before relocating to the San Francisco Bay Area and joining By the Bay Health. She lives in Sonoma County with her family and spends her spare time hiking and enjoying nature.