My mission is to diagnose, educate and treat patients about their orthopedic conditions.

Whether the time we spend together is short or long term, I strive to ensure all patients understand the nature of their conditions, and I look forward to see their progression and improvement throughout our journey together. I was born and raised in Weymouth, because of this, I am excited and honored to serve the community I grew up in.

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.

Being a physician is an honor and a privilege I have enjoyed since graduating from The Johns Hopkins University School of Medicine in 1979.  As my patients know I am interested in your life, your passions and the Orthopaedic issues that frustrate you and how I might be of assistance to you.  Surgery is not always a solution.

I take care of newborn infants and their great grandmothers.  In an era of sub-specialization, I am the "silver haired" General Orthopaedist but have maintained my surgical skills and remain confident in my abilities.  I have been fortunate to have treated multiple generations of my friends and neighbors here on the South Shore and work in a hospital committed to clinical excellence and compassionate care.

My focus is to manage and treat patients with a variety of Urologic disorders. I hope to educate them on future prevention of these issues as well. I look forward to assisting in providing surgical treatment for patients with different Urologic cancers.

My interest in medicine was first sparked when my father was diagnosed with esophageal cancer when I was nine years old. I went to Northeastern University for my undergraduate studies and Cornell Medicine for my PA degree. I enjoy playing a variety of sports and spending time with my wife and two kids in my free time.

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.