Headshot of Ashley M. O’Brien, MSN, RN

Ashley M. O’Brien, MSN, RN

Ashley’s Expertise: Addiction

About Ashley

Ashley M. O’Brien, MSN, RN, joined McLean Hospital in 2023 after working for the Massachusetts Department of Corrections in multiple nurse director roles, including Bridgewater State Hospital. She also served in the military as a military police officer for six years.

Prior to becoming a registered nurse, Ms. O’Brien obtained a practical nurse certificate from Quinsigamond Community College in 2011. She also obtained a certificate as a sexual assault nurse examiner in 2019 and a master’s degree in nursing as a nurse executive leader in 2025.

Mental Health in the Justice System

Prisoner in cell

Untreated mental health conditions can land people in jail instead of in care. Learn how the system can fail them and why reform includes effective treatment.

Prisoner in cell