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 philosophy is to have each patient feel safe and comfortable during their visits as we work together to obtain optimal women's health. 

I enjoy seeing patients on an ongoing basis and strive to develop long-term relationships that will allow me and my nurse practitioners to tailor our medical care for each individual patient's needs. We see patients in a setting that tries to foster a relaxed and friendly approach to patient care.

I am certified in menopause management as well as robotic surgery. I value being able to offer women information to assist them with transition through menopause. In addition, I have worked hard to make sure that women in the South Shore area have access to minimally invasive surgery and all it's benefits by offering robotic surgery to my patients. My nurse practitioners are especially adept at handling the needs of youth with their contraceptive needs, etc. 

I have been a vascular surgeon for more than 25 years since completing my training at the then Deaconess Hospital in Boston. A native New Englander, I returned to my home state to practice, and was Chief of Vascular Surgery at Brown/Rhode Island Hospital until I left to join the team at Brigham Vascular Surgery in October 2016. Having led an academic department for many years, I sought to bring that level of experience with state-of-the-art vascular care to the community hospital setting and was recruited specifically to lead the division at South Shore Hospital. Since my arrival, South Shore Health has supported this vision for vascular care, opening a new Endovascular OR Suite for complex aneurysm repair; developing a multidisciplinary limb preservation team together with Podiatry, Plastic Surgery, and the Wound Care Center; and organizing community outreach and education events to allow for screening and prevention of vascular disease.

In my occasional free time, I am an avid boater and the South Shore has proven to be the perfect environment for me to pursue my other passion!