As the Medical Director of Addiction Medicine at South Shore Health, I work to tackle the defining medical challenge of our time: Substance use and alcohol use disorder.

In addition to seeing adult patients at South Shore Hospital, I work with colleagues across South Shore Health to develop and implement a comprehensive addiction medicine treatment program. This program will connect patients with the resources they need to manage substance use disorder, no matter if they come to us through the Emergency Department, primary care, or another setting. Additionally, I serve as Medical Director for Spectrum Health System's opioid treatment program, ATS/detox, CSS, and therapeutic community in Weymouth.

Prior to my work at South Shore Health, I helped launch the Bridge Clinic at Boston Medical Center, which connected patients with treatment options for substance use disorder. I also served as Medical Director for Spectrum Health Systems’ Opioid Treatment Program in Weymouth.

In my spare time, I enjoy baseball, reading fiction, snowboarding, and cooking.

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.

I developed an interest in pediatrics early in my medical career and continue to love working with children. I have the privilege of getting to know patients well by following them through infancy, childhood, and adolescence. Outside of work, I enjoy spending time with my family and friends, traveling and exploring Boston.

I enjoy the challenge of the diagnostic process of medicine, which is one of the many reasons I have chosen to work as a nocturnist, which is a hospital-based physician who works overnight. In my free time, I've been known to read books about the American Revolution and Colonial Period, or attend hard rock/metal concerts. Also, '90s music is in my head all of the time. 

I have been a proud member of the Hospitalist group at South Shore Hospital since its inception in 2000. I believe that patients can benefit from a dedicated group of hospital physicians who work in conjunction with the primary care physicians and specialists in the community.  

Outside of work, I enjoy most sports and outdoor life with my family on a small farm in Southern New Hampshire.

It is a privilege to help people in need get back to being healthy. Individualized care plans and communication are paramount to practicing medicine, I strive to provide the care patients need. Outside of work, I like to try new sports and spend time with family; diligently working to excel in golf.

My focus is to provide high quality health care and excellent communication with my patients. 

I have worked clinically as a PA since 2014 in a variety of health care settings including hospitals, clinics, and subacute rehabs. This has provided me a deeper understanding of the healthcare system and the trajectory of the patient experience across multiple healthcare settings. Outside of work, I love music, traveling, and food.

I take great pride in the opportunity to improve patients' lives. Everyone has their own story and I do not view patients as defined by their age or conditions. I seek to work with the individual in order to help them be better. Outside of work, I enjoy golf and spending time with my family. 

With my role in healthcare I want to ensure that patients feel well informed and comfortable making decisions about their care.

I enjoy being able to work with patients from a variety of different back grounds and help them through their hospital stay. I want patients to feel informed and included in their health care decisions. Outside of work I enjoy doing anything to move my body from rock climbing and skiing to running and strength training.

I went into family medicine in order to have long-term relationships with my patients, and I find this to be one of the most rewarding aspects of my career.  I enjoy working with patients of all ages and working together with multigenerational families.  Outside of medicine, my interests include running, biking, skiing, and travel.  Most importantly, I love spending time with my family.