I am the Medical Director of Population Health for South Shore Health and divide my time between administration and patient care. My administrative interests include integration of care, professional development, and community centered program development. I value long-term relationships with my patients and find it a privilege to care for patients over their lifespan.

I feel privileged to care for patients from age 18 to 95 and beyond. While I base my practice firmly on research-based evidence, I am aware that much is still unknown in medicine and that guidelines evolve over time. Open communication with my patients helps me respect patients' values and health goals.

Outside of work, you can usually find me exploring the beauty of nature with my four young children.

I started practicing primary care at Boston Medical Center in 2001 and was part of the Faculty of Boston University's School of Medicine. In 2010, I transitioned to the Quincy and Braintree area to continue serving as a primary care physician and urgent care provider. I graduated from the University of Puerto Rico School of Medicine and completed my residency in Internal Medicine at the Hospital of Saint Raphael/Yale-New Haven Hospital.

I have been a physician's assistant in women’s health for close to 30 years on the South Shore. I enjoy seeing women in their many phases of life. I feel privileged when patients I met at the start of my career bring their daughters and granddaughters in to see me for their care. When not working, I enjoy spending time with my family.

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 mission is to help patients find out their disease, assist in curing it and live healthy life.

With compassionate care, I love to help people come out of their suffering. I believe that every individual is different so we should respect them and treat appropriately. Good communication is always very crucial. During my free time I love to listen music, play guitar. Also, I like meditation, yoga/ pranayam. However, most importantly I love spending time with my family.