Board Certification: Radiation Oncology

Residency: Harvard Radiation Oncology Program, Radiation Oncology

Medical School: Stanford University School of Medicine

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.

It is truly an honor to participate in the care and lives of my patients. My passion is driven by the bonds I build with my patients over the course of their lives and the enjoyment and satisfaction I hold in treating them to be as healthy and pain free as possible. It is to the extent that I feel that  "I truly have the best job in the world."

I consider myself lucky to do something that I love. Children and teens are great at reminding adults about the little joys of life while also presenting us with various medical and behavioral challenges. I enjoy navigating these challenges with each family to find the right approach for their child. Outside of work, I love spending time with my husband and three (lovable and challenging) children. I enjoy running with my dog, biking, swimming, skiing, and occasionally a good day of yard work. 

I care for women throughout their lives—from adolescence through adulthood. I especially enjoy building long-term relationships and being with my patients through each step of their lives. From routine gynecological care to preconception, pregnancy, post-partum and menopause, I am here for my patient throughout her life. I chose OB/GYN as my specialty for the diversity of practice. It involves medical care, surgical care, and delivering babies. 

My parents inspired me—my father was a surgeon and my mother a nurse. I initially wanted to forge a different path and received my bachelor’s degree in Economics. I worked in financial public relations for a short while, but I kept coming back to what really interested me: medicine. I eventually went back to medical school to pursue my true passion. Outside of work, I love being outdoors—hiking, biking, boating, paddle boarding, and snowboarding. I also love to travel and spend time with my family and beloved dog and in quieter times enjoy reading and knitting.

My treatment approach is centered around empowering individuals to take control of their own well-being. My focus is on providing a safe and supportive environment for my patients, enhance their self-awareness. My goal is to work collaboratively with patients to develop personalized treatment plans that address their unique  needs and goals.

I graduated from medical school in Eastern Europe. My OBGYN residency training took place in NYC at Maimonides medical Center. Outside of work, I love swimming and biking ; however, most importantly I love spending time with my family.

It is a privilege to help people and establish long-term relationships with my patients. I believe that everyone's medical care should be individually tailored. 

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 relieve pain and suffering by healing patients' wounds as fast as possible.

I have been practicing plastic surgery with an emphasis on complex wounds since 1999.  In addition to providing advanced wound care, surgical treatment and hyperbaric oxygen therapy, I am passionate about educating the next generation of physicians and participating in research that will transform the science of wound care. As the Research Director, I coordinate and lead clinical trials of potential new wound  therapies, providing the opportunity for our patients to participate in their own community.

My philosophy is to develop an ongoing patient-physician relationship focused on comprehensive health care incorporating preventative care, chronic disease management, and treatment of acute illnesses and injuries.

As a family doctor, I am dedicated to treating the whole person. I aim to develop long-term relationships to understand each patient, and to provide continuing health care for the individual and family. I integrate care for patients of all genders and every age from newborns to seniors, and I advocate for the patient in our complex health care system. I have had the fortune to work as a general practitioner in New Zealand which allowed me to gain insight into alternative health care systems and approaches to preventative care and disease management. Outside of work, I enjoy traveling, cooking, and reading.