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.

Before becoming a midwife, I was a labor and delivery nurse at South Shore Hospital for 14 years. Women's health is my passion, and it is a privilege to return as a provider. I am honored to care for women during pregnancy, labor, birth, and throughout the lifespan. My care focuses on a team approach with the patient as the leader. Beyond midwifery, I enjoy hiking and yoga and love being a mom most of all.     

I like to tailor treatment plans based on an individual characteristics. Communication is key and I like to get the patient involved in the decision making. I think this facilitates trust and when patients have trust in their provider, they are  able to manage, treat, and prevent diseases more effectively.

I graduated from Quinnipiac University PA program in August 2005, and started my career as a Primary Care PA. I later transitioned to Urgent Care. I have been practicing as an Urgent Care PA for over a decade and love it. My hobbies include biking, hiking, yoga, exercising, traveling and spending time with my family.

My mission includes inpatient acute care of general medical, telemetry and as well as consultative services for patients who require surgery.

My mission is to educate patients on their health conditions and provide personalized care to patients and their families.

I am passionate about providing the best possible care to patients. Entering the hospital can be a scary and stressful time for patients and their families. As a provider, I hope to ease this transition and cater to patient’s physical and emotional needs. Outside of work, I enjoy spending time outdoors, hiking, exercising, and spending time with my family.

I came to medicine from the business world, and it has been incredibly rewarding to focus my energy and abilities on helping people who are acutely ill. I believe that really listening to patients and their families is the key to providing exceptional care. Outside of work, I enjoy spending time with my wife and two young children.