Dr. O'Brien is Medical Director of Maternal-Fetal Medicine at South Shore Health. 

As a Maternal-Fetal Medicine physician, I am dedicated to caring for women and families navigating high-risk and medically complex pregnancies with expertise, compassion, and individualized attention. 

I strive to integrate evidence-based medicine with a holistic approach that recognizes the physical, emotional, and social factors that shape each patient’s experience. 

I am also committed to advocating for equitable healthcare and improving access and outcomes for marginalized and underserved communities.

My goal as an FNP is to create a safe and welcoming environment where patients can openly share their concerns and trust that I’ll provide the best possible care. 

I always strive to better my practice to have the opportunity to make a difference in my patients' lives. I want to be the provider that patients come to, knowing they will feel heard; and empowering them to take control of their overall wellbeing. I believe in the importance of going above and beyond for each individual patient to optimize their quality of life. Outside of work, I enjoy traveling and hiking with my wife and dog!

I grew up on the South Shore and attended Holy Cross for college where my concentration was pre-medical sciences and sleep research. During summers in college I worked as an EMT and following college I worked in a collaborative Brigham and Women’s Hospital/Harvard Medical School lab studying allergy and asthma. While at the University of Massachusetts Medical School and Lahey Clinic my focus was on primary care internal medicine. In 2006 I was the recipient of the “Patient Care Award” which is Lahey Clinic’s highest physician honor. I joined South Shore Medical Center in 2006.