I earned my Bachelor of Science degree from Boston College and my medical degree from Loyola University in Chicago. Upon graduation from Loyola, I returned to my native Long Island to complete my residency in pediatrics at SUNY Stony Brook. Following an additional year as Chief Resident, I returned to Massachusetts to settle. Professionally, I cherish the privilege of establishing long-term relationships with my patients' families and playing a small role in assisting a child to blossom into a happy, healthy, well-adjusted adult. In my spare time, I enjoy kayaking, practicing yoga, going to the beach, and spending time with my husband and five children.
 

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.

Dr. Christopher Cannell is a doctoral-trained Physician Associate with over 22 years of multidisciplinary clinical experience in Emergency Medicine (CAQ-EM), Orthopedics, Critical Care, and Internal Medicine. He is nationally recognized for his leadership and expertise in healthcare quality, patient safety, and risk mitigation.  He is a frequent invited speaker on Provider Clinical Risk Management and a blogger for medical liability companies on these critical topics.

Dr. Cannell is a successful entrepreneur leading a six-figure consulting firm where he also trains and encourages other healthcare provider entrepreneurs to explore their passions, niches, and grow their own business.

Dr. Cannell has held key leadership positions including current President of PAs in Legal Medicine, Board of Directors for the Academy of Doctoral PAs and previously with Massachusetts Association of PAs, and Board Advisor for the SCUHS Doctor of Medical Science program. He has led clinical teams as an APC Director, Department Lead, healthcare system, program manager and thought leader and Chair of APC career letter committee, driving innovation in quality improvement, documentation, onboarding, population management, operations, and value-based care initiatives across health systems.  Created POCUS acute care program for PAs and NPs at the largest community hospital in Massachusetts in alignment with the department ultrasound director. 

Dr. Cannell is an experienced medical professional legal consultant (MPLC) and expert witness, certified through Auburn University and The Center for Legal Studies. He has over 8 years of experience providing expert witness and consulting services focused on clinical risk assessment, discovery, and standard of care.  His collaborative consulting work spans clinicians, legal teams, malpractice insurance consultants, executives, AI technology, and life sciences organizations.

A dedicated educator and mentor, Dr. Cannell serves as Assistant Professor Doctor of Medical Science Program at The University of Lynchburg, current adjunct faculty for the Doctor of Medical Science Program at Marshall B. Ketchum University and also previously with South College (Healthcare Law & Policy), and currently for Northeastern University School of Medical Sciences PA Program, and the Tufts School of Medicine PA Program. He is a subject matter expert in generative AI development, educational consulting for early career and transitional career NPs and PA’s, and interprofessional collaboration to advance the Quadruple Aim.

Dr. Cannell completed leadership training in Just Culture, High Reliability, as well as patient safety through the Institute for Healthcare Improvement (IHI). He earned his DMSc from the University of Lynchburg, MPAS from MCPHS–Boston, and BA in Pre-Medical Studies and Psychology from Muhlenberg College. He has done additional leadership training from AAPA from The Center for Healthcare Leadership and Management.

As a doctor at Brigham and Women's Harbor Medical Associates, I work to maintain our commitment to delivering prompt, expert and compassionate care.

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.

My job is ultimately about the trust that comes from a long-term relationship.  I am honored that people choose me to care for them and their extended families, and I do my best to give thoughtful and evidenced based advice.  Each of us has unique goals for our long term health, and I really enjoy giving people guidance in this realm.  I also enjoy the challenge of my work.  Each day is extremely diverse and forces me to stay continually current.  When I am not at work, I love competing in triathlon and cycling events, skiing, travel, and being outside.  I also adore being a father to my three daughters.