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.

Having grown up on the South Shore, it is a pleasure to care for patients of this region. I served in the US Navy following medical school and completed my surgical training through the Navy. Following multiple military assignments, I chose to return to the area in order to serve my local community and reside closer to my family. 

I earned my Bachelor of Science degree from Boston College and my medical degree from Loyola University in Chicago. Upon graduation from Loyola, I returned to my native Long Island to complete my residency in pediatrics at SUNY Stony Brook. Following an additional year as Chief Resident, I returned to Massachusetts to settle. Professionally, I cherish the privilege of establishing long-term relationships with my patients' families and playing a small role in assisting a child to blossom into a happy, healthy, well-adjusted adult. In my spare time, I enjoy kayaking, practicing yoga, going to the beach, and spending time with my husband and five children.
 

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.

My mission is to provide excellent care to all of those in need with compassion and empathy.

I grew up in Duxbury, MA on the South Shore and attended Colby College in Maine. I then obtained my Master of Science degree at Mercer University School of Medicine in Georgia. After securing those credentials I attended MGH Institute of Health Professions for PA school, where I graduated in 2021. I take pride in getting to know each patient, their specific medical condition and then guiding them through difficult medical pathways and stressful circumstances. I enjoy my work/life balance and love traveling, workout classes, skiing, and everything wellness.

I partner with women to provide education, resources and choices regarding their bodies, healthy pregnancy, labor and birth. It is a privilege to care for women and families and to be present at their birth. Each labor and birth are unique. Even after 33 years as a midwife, I am amazed at the beauty of birth and the strength of women.

I started the first midwifery practice at South Shore Health in 1987 and have enjoyed being director and now co-director of the midwifery group and watching our program grow over the years. Outside of work, I love spending time with my husband and children. I also love running my dog on the beach, paddleboarding and gardening.
 

My mission is to treat my patients with compassion and kindness and take the time to know and understand them.

I am certified by the American Board of Internal Medicine in Internal Medicine, Medical Oncology and Hematology. I received my BA in Biology at State University of New York at Buffalo and my MD from Jefferson Medical College of Thomas Jefferson University in Philadelphia, PA. I did my residency in Medicine at Lankenau Hospital in Philadelphia, PA and Fellowship in Hematology-Oncology at University of Connecticut Health Center in Farmington, CT. I was recognized in Boston Magazine's 2017 Top Doctors list. Outside of work, I enjoy listening to classical music, traveling, running, and bicycling.