William Tollefsen, MD is the EMS and MIH Medical Director for South Shore Health. Dual-boarded in Emergency Medicine and EMS Medicine, Dr. Tollefsen works clinically as an Emergency Physician at South Shore Health in addition to his role as EMS Medical Director.

One of few physicians in the country to receive the prestigious "FAEMS" recognition, Dr. Tollefsen is also the Medical Director for OEMS Region IV, serving 61 cities and towns of the Metro-Boston EMS Council. As the current EMS Medical Director for eight municipal and three private ambulance services on the South Shore, Dr. Tollefsen interacts and provides oversight for over 400 Paramedics.

Dr. Tollefsen graduated from New York Medical College and completed residency training in Emergency Medicine at Harvard University, Brigham and Women's, and Massachusetts General Hospital. He completed a fellowship in Emergency Medical Services and Critical Care Transport at the University of Massachusetts, where he worked as an Emergency Physician and Flight Physician for UMASS LifeFlight. He completed an MBA at the Isenberg School of Management at UMASS Amherst, and holds a Master of Medical Science degree from the Boston University School of Medicine.

A former pre-hospital provider, he is actively involved in EMS system design, paramedic education and Critical Care Transport Systems. He works closely with multiple EMS, Fire and Law Enforcement agencies throughout Massachusetts.

His research interests include systems of care, resuscitation, airway management, and paramedic education.

In my career as an emergency physician, I have gotten to take care of patients in both the usual emergency department setting as well as some other unusual environment. Regardless of the location, one thing remains the same - it is about the patient and the care they need at a time of medical crisis. I spend most of my time outside of work, still engaged in medicine with a variety of emergency response organizations as well as the military.

My goal is to care for our patients as we would our loved ones: with expertise, compassion, and respect.

I grew up in the Chicago area and graduated from University of Chicago before moving to Boston for medical training at Boston University, followed by residency at Boston Medical Center.

I have been a hospitalist attending physician at South Shore Hospital since 2012. I married in 2006 and have two girls.

I became a Physician Assistant because I love people, medicine, and teamwork. It is a privilege to be a part of someone’s health care team and I aim to do my best for each patient. I care for patient’s 18 and older by following medical guidelines, research and carefully listening to a patient’s history.

Outside of work, I love to spend time with my family, run and read.

Kelly Lannutti, DO is the Director of Clinical Transformation and co-Medical Director of Mobile Integrated Health (MIH) for South Shore Health.

She is originally from Philadelphia and completed her medical training at Philadelphia College of Osteopathic Medicine. Dr. Lannutti joined South Shore Health in 2017 as the Chief of Urgent Care at South Shore Medical Center (SSMC). In 2019, Dr. Lannutti became Medical Director of Urgent Care for South Shore Health and recently moved to the Population Health and Contracting team.

In her current role, Dr. Lannutti oversees clinical initiatives and innovative care redesign programs including Mobile Integrated Health, Hospital at Home, Telehealth, and Remote Patient Monitoring.

Dr. Lannutti is passionate about rethinking how healthcare is delivered and establishing South Shore Health as a leader in innovation and value-based care.